A student collected a packet trace on its DNS resolver while running the following command:
dig -t AAAA www.computer-networking.info
This trace was collected with a resolver that does not store any record in its cache. Can you reorder the packets of this trace by looking and the succession of the types of DNS requests starting from the root ?
# |
Length |
Summary |
Status |
0 |
27 bytes |
Domain Name System (query) |
|
1 |
22 bytes |
Domain Name System (query) |
|
2 |
31 bytes |
Domain Name System (query) |
|
3 |
506 bytes |
Domain Name System (response) |
|
4 |
17 bytes |
Domain Name System (query) |
|
5 |
228 bytes |
Domain Name System (response) |
|
6 |
23 bytes |
Domain Name System (query) |
|
7 |
21 bytes |
Domain Name System (query) |
|
8 |
25 bytes |
Domain Name System (query) |
|
9 |
343 bytes |
Domain Name System (response) |
|
10 |
42 bytes |
Domain Name System (query) |
|
11 |
260 bytes |
Domain Name System (response) |
|
12 |
425 bytes |
Domain Name System (response) |
|
13 |
387 bytes |
Domain Name System (response) |
|
14 |
88 bytes |
Domain Name System (response) |
|
15 |
83 bytes |
Domain Name System (response) |
|
16 |
32 bytes |
Domain Name System (query) |
|
17 |
20 bytes |
Domain Name System (query) |
|
18 |
512 bytes |
Domain Name System (response) |
|
19 |
287 bytes |
Domain Name System (response) |
|
20 |
59 bytes |
Domain Name System (response) |
|
21 |
41 bytes |
Domain Name System (query) |
|
22 |
244 bytes |
Domain Name System (response) |
|
23 |
46 bytes |
Domain Name System (query) |
|
0000
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- Domain Name System (query)
- Transaction ID: 0xc473
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- ucl.ac.be: type NS, class IN
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
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- Domain Name System (query)
- Transaction ID: 0xa560
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- info: type NS, class IN
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
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- Domain Name System (query)
- Transaction ID: 0xdd1c
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- dns20.ovh.net: type AAAA, class IN
- Name: dns20.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
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- Domain Name System (response)
- Transaction ID: 0xc173
- Flags: 0x8300 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..1. .... .... = Truncated: Message is truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 0
- Authority RRs: 13
- Additional RRs: 12
- Queries
- net: type NS, class IN
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Authoritative nameservers
- net: type NS, class IN, ns a.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 17
- Name Server: a.gtld-servers.net
- net: type NS, class IN, ns b.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: b.gtld-servers.net
- net: type NS, class IN, ns c.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: c.gtld-servers.net
- net: type NS, class IN, ns d.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: d.gtld-servers.net
- net: type NS, class IN, ns e.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: e.gtld-servers.net
- net: type NS, class IN, ns f.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: f.gtld-servers.net
- net: type NS, class IN, ns g.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: g.gtld-servers.net
- net: type NS, class IN, ns h.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: h.gtld-servers.net
- net: type NS, class IN, ns i.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: i.gtld-servers.net
- net: type NS, class IN, ns j.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: j.gtld-servers.net
- net: type NS, class IN, ns k.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: k.gtld-servers.net
- net: type NS, class IN, ns l.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: l.gtld-servers.net
- net: type NS, class IN, ns m.gtld-servers.net
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: m.gtld-servers.net
- Additional records
- a.gtld-servers.net: type A, class IN, addr 192.5.6.30
- Name: a.gtld-servers.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 192.5.6.30
- a.gtld-servers.net: type AAAA, class IN, addr 2001:503:a83e::2:30
- Name: a.gtld-servers.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:503:a83e::2:30
- b.gtld-servers.net: type A, class IN, addr 192.33.14.30
- Name: b.gtld-servers.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 192.33.14.30
- b.gtld-servers.net: type AAAA, class IN, addr 2001:503:231d::2:30
- Name: b.gtld-servers.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:503:231d::2:30
- c.gtld-servers.net: type A, class IN, addr 192.26.92.30
- Name: c.gtld-servers.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 192.26.92.30
- c.gtld-servers.net: type AAAA, class IN, addr 2001:503:83eb::30
- Name: c.gtld-servers.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:503:83eb::30
- d.gtld-servers.net: type A, class IN, addr 192.31.80.30
- Name: d.gtld-servers.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 192.31.80.30
- d.gtld-servers.net: type AAAA, class IN, addr 2001:500:856e::30
- Name: d.gtld-servers.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:856e::30
- e.gtld-servers.net: type A, class IN, addr 192.12.94.30
- Name: e.gtld-servers.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 192.12.94.30
- e.gtld-servers.net: type AAAA, class IN, addr 2001:502:1ca1::30
- Name: e.gtld-servers.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:502:1ca1::30
- f.gtld-servers.net: type A, class IN, addr 192.35.51.30
- Name: f.gtld-servers.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 192.35.51.30
- f.gtld-servers.net: type AAAA, class IN, addr 2001:503:d414::30
- Name: f.gtld-servers.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:503:d414::30
0000
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- Domain Name System (query)
- Transaction ID: 0xd351
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- : type NS, class IN
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
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- Domain Name System (response)
- Transaction ID: 0xd351
- Flags: 0x81a0 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 1... .... = Recursion available: Server can do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = Answer authenticated: Answer/authority portion was authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 13
- Authority RRs: 0
- Additional RRs: 0
- Queries
- : type NS, class IN
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Answers
- : type NS, class IN, ns e.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 20
- Name Server: e.root-servers.net
- : type NS, class IN, ns h.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: h.root-servers.net
- : type NS, class IN, ns l.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: l.root-servers.net
- : type NS, class IN, ns i.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: i.root-servers.net
- : type NS, class IN, ns a.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: a.root-servers.net
- : type NS, class IN, ns d.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: d.root-servers.net
- : type NS, class IN, ns c.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: c.root-servers.net
- : type NS, class IN, ns b.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: b.root-servers.net
- : type NS, class IN, ns j.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: j.root-servers.net
- : type NS, class IN, ns k.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: k.root-servers.net
- : type NS, class IN, ns g.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: g.root-servers.net
- : type NS, class IN, ns m.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: m.root-servers.net
- : type NS, class IN, ns f.root-servers.net
- Name:
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 46350
- Data length: 4
- Name Server: f.root-servers.net
0000
d3
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- Transaction ID: 0xd3d7
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
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- Questions: 1
- Answer RRs: 0
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- Additional RRs: 0
- Queries
- ac.be: type NS, class IN
- Name: ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
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73
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- Domain Name System (query)
- Transaction ID: 0xc173
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- net: type NS, class IN
- Name: net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
29
00
01
20
00
01
00
00
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- Domain Name System (query)
- Transaction ID: 0x2900
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- ovh.net: type NS, class IN
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
ef
e8
85
80
00
01
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02
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04
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08
08
63
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33
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63
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- Domain Name System (response)
- Transaction ID: 0xefe8
- Flags: 0x8580 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .1.. .... .... = Authoritative: Server is an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 1... .... = Recursion available: Server can do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 2
- Authority RRs: 4
- Additional RRs: 8
- Queries
- cnp3book.info.ucl.ac.be: type AAAA, class IN
- Name: cnp3book.info.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Answers
- cnp3book.info.ucl.ac.be: type CNAME, class IN, cname cnp3.info.ucl.ac.be
- Name: cnp3book.info.ucl.ac.be
- Type: CNAME (Canonical NAME for an alias) (5)
- Class: IN (0x0001)
- Time to live: 7200
- Data length: 7
- CNAME: cnp3.info.ucl.ac.be
- cnp3.info.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:308f:8::82ff:fe68:e48c
- Name: cnp3.info.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 7200
- Data length: 16
- AAAA Address: 2001:6a8:308f:8::82ff:fe68:e48c
- Authoritative nameservers
- info.ucl.ac.be: type NS, class IN, ns ns2.sri.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 10
- Name Server: ns2.sri.ucl.ac.be
- info.ucl.ac.be: type NS, class IN, ns dnssrv.info.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 9
- Name Server: dnssrv.info.ucl.ac.be
- info.ucl.ac.be: type NS, class IN, ns ns3.sri.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 6
- Name Server: ns3.sri.ucl.ac.be
- info.ucl.ac.be: type NS, class IN, ns ns1.sri.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 6
- Name Server: ns1.sri.ucl.ac.be
- Additional records
- dnssrv.info.ucl.ac.be: type A, class IN, addr 130.104.230.68
- Name: dnssrv.info.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.230.68
- dnssrv.info.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:308f:1::d
- Name: dnssrv.info.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:308f:1::d
- ns1.sri.ucl.ac.be: type A, class IN, addr 130.104.1.1
- Name: ns1.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 57376
- Data length: 4
- Address: 130.104.1.1
- ns1.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3081:1::53
- Name: ns1.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 57376
- Data length: 16
- AAAA Address: 2001:6a8:3081:1::53
- ns2.sri.ucl.ac.be: type A, class IN, addr 130.104.1.2
- Name: ns2.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 57376
- Data length: 4
- Address: 130.104.1.2
- ns2.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3081:2::53
- Name: ns2.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 57376
- Data length: 16
- AAAA Address: 2001:6a8:3081:2::53
- ns3.sri.ucl.ac.be: type A, class IN, addr 130.104.254.1
- Name: ns3.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 57376
- Data length: 4
- Address: 130.104.254.1
- ns3.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3082:1::53
- Name: ns3.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 57376
- Data length: 16
- AAAA Address: 2001:6a8:3082:1::53
0000
2d
56
01
20
00
01
00
00
00
00
00
00
13
63
6f
6d
0010
70
75
74
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- Domain Name System (query)
- Transaction ID: 0x2d56
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- computer-networking.info: type NS, class IN
- Name: computer-networking.info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
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- Domain Name System (response)
- Transaction ID: 0xc473
- Flags: 0x8500 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .1.. .... .... = Authoritative: Server is an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 5
- Authority RRs: 0
- Additional RRs: 6
- Queries
- ucl.ac.be: type NS, class IN
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Answers
- ucl.ac.be: type NS, class IN, ns ns1.sri.ucl.ac.be
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 10
- Name Server: ns1.sri.ucl.ac.be
- ucl.ac.be: type NS, class IN, ns ns1.belnet.be
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 13
- Name Server: ns1.belnet.be
- ucl.ac.be: type NS, class IN, ns ns2.sri.ucl.ac.be
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 6
- Name Server: ns2.sri.ucl.ac.be
- ucl.ac.be: type NS, class IN, ns ns2.belnet.be
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 6
- Name Server: ns2.belnet.be
- ucl.ac.be: type NS, class IN, ns ns3.sri.ucl.ac.be
- Name: ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 6
- Name Server: ns3.sri.ucl.ac.be
- Additional records
- ns1.sri.ucl.ac.be: type A, class IN, addr 130.104.1.1
- Name: ns1.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.1.1
- ns2.sri.ucl.ac.be: type A, class IN, addr 130.104.1.2
- Name: ns2.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.1.2
- ns3.sri.ucl.ac.be: type A, class IN, addr 130.104.254.1
- Name: ns3.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.254.1
- ns1.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3081:1::53
- Name: ns1.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:3081:1::53
- ns2.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3081:2::53
- Name: ns2.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:3081:2::53
- ns3.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3082:1::53
- Name: ns3.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:3082:1::53
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- Domain Name System (response)
- Transaction ID: 0xa560
- Flags: 0x8100 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 0
- Authority RRs: 6
- Additional RRs: 12
- Queries
- info: type NS, class IN
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Authoritative nameservers
- info: type NS, class IN, ns a0.info.afilias-nst.info
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 22
- Name Server: a0.info.afilias-nst.info
- info: type NS, class IN, ns a2.info.afilias-nst.info
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 5
- Name Server: a2.info.afilias-nst.info
- info: type NS, class IN, ns b0.info.afilias-nst.org
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 25
- Name Server: b0.info.afilias-nst.org
- info: type NS, class IN, ns b2.info.afilias-nst.org
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 5
- Name Server: b2.info.afilias-nst.org
- info: type NS, class IN, ns c0.info.afilias-nst.info
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 5
- Name Server: c0.info.afilias-nst.info
- info: type NS, class IN, ns d0.info.afilias-nst.org
- Name: info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 5
- Name Server: d0.info.afilias-nst.org
- Additional records
- a0.info.afilias-nst.info: type AAAA, class IN, addr 2001:500:19::1
- Name: a0.info.afilias-nst.info
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:19::1
- a2.info.afilias-nst.info: type AAAA, class IN, addr 2001:500:41::1
- Name: a2.info.afilias-nst.info
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:41::1
- b0.info.afilias-nst.org: type AAAA, class IN, addr 2001:500:1a::1
- Name: b0.info.afilias-nst.org
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:1a::1
- b2.info.afilias-nst.org: type AAAA, class IN, addr 2001:500:49::1
- Name: b2.info.afilias-nst.org
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:49::1
- c0.info.afilias-nst.info: type AAAA, class IN, addr 2001:500:1b::1
- Name: c0.info.afilias-nst.info
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:1b::1
- d0.info.afilias-nst.org: type AAAA, class IN, addr 2001:500:1c::1
- Name: d0.info.afilias-nst.org
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:500:1c::1
- a0.info.afilias-nst.info: type A, class IN, addr 199.254.31.1
- Name: a0.info.afilias-nst.info
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 199.254.31.1
- a2.info.afilias-nst.info: type A, class IN, addr 199.249.113.1
- Name: a2.info.afilias-nst.info
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 199.249.113.1
- b0.info.afilias-nst.org: type A, class IN, addr 199.254.48.1
- Name: b0.info.afilias-nst.org
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 199.254.48.1
- b2.info.afilias-nst.org: type A, class IN, addr 199.249.121.1
- Name: b2.info.afilias-nst.org
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 199.249.121.1
- c0.info.afilias-nst.info: type A, class IN, addr 199.254.49.1
- Name: c0.info.afilias-nst.info
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 199.254.49.1
- d0.info.afilias-nst.org: type A, class IN, addr 199.254.50.1
- Name: d0.info.afilias-nst.org
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 199.254.50.1
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- Domain Name System (response)
- Transaction ID: 0x4da0
- Flags: 0x8100 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 0
- Authority RRs: 6
- Additional RRs: 12
- Queries
- be: type NS, class IN
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Authoritative nameservers
- be: type NS, class IN, ns a.ns.dns.be
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 11
- Name Server: a.ns.dns.be
- be: type NS, class IN, ns b.ns.dns.be
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: b.ns.dns.be
- be: type NS, class IN, ns c.ns.dns.be
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: c.ns.dns.be
- be: type NS, class IN, ns d.ns.dns.be
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: d.ns.dns.be
- be: type NS, class IN, ns x.ns.dns.be
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: x.ns.dns.be
- be: type NS, class IN, ns y.ns.dns.be
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Name Server: y.ns.dns.be
- Additional records
- a.ns.dns.be: type AAAA, class IN, addr 2001:678:9::1
- Name: a.ns.dns.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:678:9::1
- b.ns.dns.be: type AAAA, class IN, addr 2001:678:64::1
- Name: b.ns.dns.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:678:64::1
- c.ns.dns.be: type AAAA, class IN, addr 2001:678:68::1
- Name: c.ns.dns.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:678:68::1
- d.ns.dns.be: type AAAA, class IN, addr 2001:678:6c::1
- Name: d.ns.dns.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:678:6c::1
- x.ns.dns.be: type AAAA, class IN, addr 2001:678:4::a
- Name: x.ns.dns.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:678:4::a
- y.ns.dns.be: type AAAA, class IN, addr 2001:dcd:7::8
- Name: y.ns.dns.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:dcd:7::8
- a.ns.dns.be: type A, class IN, addr 194.0.6.1
- Name: a.ns.dns.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 194.0.6.1
- b.ns.dns.be: type A, class IN, addr 194.0.37.1
- Name: b.ns.dns.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 194.0.37.1
- c.ns.dns.be: type A, class IN, addr 194.0.43.1
- Name: c.ns.dns.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 194.0.43.1
- d.ns.dns.be: type A, class IN, addr 194.0.44.1
- Name: d.ns.dns.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 194.0.44.1
- x.ns.dns.be: type A, class IN, addr 194.0.1.10
- Name: x.ns.dns.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 194.0.1.10
- y.ns.dns.be: type A, class IN, addr 120.29.253.8
- Name: y.ns.dns.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 120.29.253.8
0000
2d
56
81
00
00
01
00
00
00
02
00
00
13
63
6f
6d
0010
70
75
74
65
72
2d
6e
65
74
77
6f
72
6b
69
6e
67
0020
04
69
6e
66
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00
00
02
00
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00
02
00
01
0030
00
01
51
80
00
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05
64
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73
32
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03
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- Domain Name System (response)
- Transaction ID: 0x2d56
- Flags: 0x8100 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 0
- Authority RRs: 2
- Additional RRs: 0
- Queries
- computer-networking.info: type NS, class IN
- Name: computer-networking.info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Authoritative nameservers
- computer-networking.info: type NS, class IN, ns dns20.ovh.net
- Name: computer-networking.info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 15
- Name Server: dns20.ovh.net
- computer-networking.info: type NS, class IN, ns ns20.ovh.net
- Name: computer-networking.info
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 7
- Name Server: ns20.ovh.net
0000
76
ba
85
00
00
01
00
01
00
00
00
00
03
77
77
77
0010
13
63
6f
6d
70
75
74
65
72
2d
6e
65
74
77
6f
72
0020
6b
69
6e
67
04
69
6e
66
6f
00
00
1c
00
01
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0c
0030
00
05
00
01
00
00
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10
00
19
08
63
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70
33
62
0040
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04
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3
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- Domain Name System (response)
- Transaction ID: 0x76ba
- Flags: 0x8500 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .1.. .... .... = Authoritative: Server is an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 1
- Authority RRs: 0
- Additional RRs: 0
- Queries
- www.computer-networking.info: type AAAA, class IN
- Name: www.computer-networking.info
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Answers
- www.computer-networking.info: type CNAME, class IN, cname cnp3book.info.ucl.ac.be
- Name: www.computer-networking.info
- Type: CNAME (Canonical NAME for an alias) (5)
- Class: IN (0x0001)
- Time to live: 3600
- Data length: 25
- CNAME: cnp3book.info.ucl.ac.be
0000
84
d0
01
20
00
01
00
00
00
00
00
00
04
69
6e
66
0010
6f
03
75
63
6c
02
61
63
02
62
65
00
00
02
00
01
0000
.
Ð
.
.
.
.
.
.
.
.
.
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i
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f
0010
o
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- Domain Name System (query)
- Transaction ID: 0x84d0
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- info.ucl.ac.be: type NS, class IN
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
4d
a0
01
20
00
01
00
00
00
00
00
00
02
62
65
00
0010
00
02
00
01
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.
.
.
.
.
.
.
.
.
.
.
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e
.
0010
.
.
.
.
- Domain Name System (query)
- Transaction ID: 0x4da0
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- be: type NS, class IN
- Name: be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
0000
29
00
81
00
00
01
00
00
00
0a
00
0d
03
6f
76
68
0010
03
6e
65
74
00
00
02
00
01
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0c
00
02
00
01
00
0020
02
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00
00
07
04
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73
31
30
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00
02
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02
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08
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64
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31
35
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02
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73
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31
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- Domain Name System (response)
- Transaction ID: 0x2900
- Flags: 0x8100 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 0
- Authority RRs: 10
- Additional RRs: 13
- Queries
- ovh.net: type NS, class IN
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Authoritative nameservers
- ovh.net: type NS, class IN, ns ns10.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 7
- Name Server: ns10.ovh.net
- ovh.net: type NS, class IN, ns dns15.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 8
- Name Server: dns15.ovh.net
- ovh.net: type NS, class IN, ns dns10.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 8
- Name Server: dns10.ovh.net
- ovh.net: type NS, class IN, ns dns11.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 8
- Name Server: dns11.ovh.net
- ovh.net: type NS, class IN, ns ns11.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 7
- Name Server: ns11.ovh.net
- ovh.net: type NS, class IN, ns dns12.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 8
- Name Server: dns12.ovh.net
- ovh.net: type NS, class IN, ns ns12.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 7
- Name Server: ns12.ovh.net
- ovh.net: type NS, class IN, ns ns15.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 7
- Name Server: ns15.ovh.net
- ovh.net: type NS, class IN, ns ns13.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 7
- Name Server: ns13.ovh.net
- ovh.net: type NS, class IN, ns dns13.ovh.net
- Name: ovh.net
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 8
- Name Server: dns13.ovh.net
- Additional records
- ns10.ovh.net: type AAAA, class IN, addr 2001:41d0:1:1981::1
- Name: ns10.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:1981::1
- ns10.ovh.net: type A, class IN, addr 213.251.128.129
- Name: ns10.ovh.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 213.251.128.129
- dns15.ovh.net: type AAAA, class IN, addr 2001:41d0:1:4a86::1
- Name: dns15.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:4a86::1
- dns15.ovh.net: type A, class IN, addr 213.251.188.134
- Name: dns15.ovh.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 213.251.188.134
- dns10.ovh.net: type AAAA, class IN, addr 2001:41d0:1:4a81::1
- Name: dns10.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:4a81::1
- dns10.ovh.net: type A, class IN, addr 213.251.188.129
- Name: dns10.ovh.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 213.251.188.129
- dns11.ovh.net: type AAAA, class IN, addr 2001:41d0:1:4a82::1
- Name: dns11.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:4a82::1
- dns11.ovh.net: type A, class IN, addr 213.251.188.130
- Name: dns11.ovh.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 213.251.188.130
- ns11.ovh.net: type AAAA, class IN, addr 2001:41d0:1:1982::1
- Name: ns11.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:1982::1
- ns11.ovh.net: type A, class IN, addr 213.251.128.130
- Name: ns11.ovh.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 213.251.128.130
- dns12.ovh.net: type AAAA, class IN, addr 2001:41d0:1:4a83::1
- Name: dns12.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:4a83::1
- dns12.ovh.net: type A, class IN, addr 213.251.188.131
- Name: dns12.ovh.net
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 4
- Address: 213.251.188.131
- ns12.ovh.net: type AAAA, class IN, addr 2001:41d0:1:1983::1
- Name: ns12.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 172800
- Data length: 16
- AAAA Address: 2001:41d0:1:1983::1
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- Domain Name System (response)
- Transaction ID: 0x84d0
- Flags: 0x8580 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .1.. .... .... = Authoritative: Server is an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 1... .... = Recursion available: Server can do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 4
- Authority RRs: 0
- Additional RRs: 8
- Queries
- info.ucl.ac.be: type NS, class IN
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Answers
- info.ucl.ac.be: type NS, class IN, ns ns2.sri.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 10
- Name Server: ns2.sri.ucl.ac.be
- info.ucl.ac.be: type NS, class IN, ns ns3.sri.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 6
- Name Server: ns3.sri.ucl.ac.be
- info.ucl.ac.be: type NS, class IN, ns dnssrv.info.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 9
- Name Server: dnssrv.info.ucl.ac.be
- info.ucl.ac.be: type NS, class IN, ns ns1.sri.ucl.ac.be
- Name: info.ucl.ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 6
- Name Server: ns1.sri.ucl.ac.be
- Additional records
- ns1.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3081:1::53
- Name: ns1.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:3081:1::53
- ns2.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3081:2::53
- Name: ns2.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:3081:2::53
- ns3.sri.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:3082:1::53
- Name: ns3.sri.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:3082:1::53
- dnssrv.info.ucl.ac.be: type AAAA, class IN, addr 2001:6a8:308f:1::d
- Name: dnssrv.info.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 16
- AAAA Address: 2001:6a8:308f:1::d
- ns1.sri.ucl.ac.be: type A, class IN, addr 130.104.1.1
- Name: ns1.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.1.1
- ns2.sri.ucl.ac.be: type A, class IN, addr 130.104.1.2
- Name: ns2.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.1.2
- ns3.sri.ucl.ac.be: type A, class IN, addr 130.104.254.1
- Name: ns3.sri.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.254.1
- dnssrv.info.ucl.ac.be: type A, class IN, addr 130.104.230.68
- Name: dnssrv.info.ucl.ac.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 604800
- Data length: 4
- Address: 130.104.230.68
0000
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- Domain Name System (response)
- Transaction ID: 0xdd1c
- Flags: 0x8500 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .1.. .... .... = Authoritative: Server is an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 1
- Authority RRs: 0
- Additional RRs: 0
- Queries
- dns20.ovh.net: type AAAA, class IN
- Name: dns20.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Answers
- dns20.ovh.net: type AAAA, class IN, addr 2001:41d0:1:4a8f::1
- Name: dns20.ovh.net
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 3600
- Data length: 16
- AAAA Address: 2001:41d0:1:4a8f::1
0000
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- Domain Name System (query)
- Transaction ID: 0xefe8
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- cnp3book.info.ucl.ac.be: type AAAA, class IN
- Name: cnp3book.info.ucl.ac.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
0000
d3
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81
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- Domain Name System (response)
- Transaction ID: 0xd3d7
- Flags: 0x8100 Standard query response, No error
- 1... .... .... .... = Response: Message is a response
- .000 0... .... .... = Opcode: Standard query (0)
- .... .0.. .... .... = Authoritative: Server is not an authority for domain
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... 0... .... = Recursion available: Server can't do recursive queries
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- .... .... .... 0000 = Reply code: No error (0)
- Questions: 1
- Answer RRs: 0
- Authority RRs: 4
- Additional RRs: 6
- Queries
- ac.be: type NS, class IN
- Name: ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Authoritative nameservers
- ac.be: type NS, class IN, ns ns2.belnet.be
- Name: ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 13
- Name Server: ns2.belnet.be
- ac.be: type NS, class IN, ns ns1.surfnet.nl
- Name: ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 16
- Name Server: ns1.surfnet.nl
- ac.be: type NS, class IN, ns ns3.belnet.be
- Name: ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 6
- Name Server: ns3.belnet.be
- ac.be: type NS, class IN, ns ns1.belnet.be
- Name: ac.be
- Type: NS (authoritative Name Server) (2)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 6
- Name Server: ns1.belnet.be
- Additional records
- ns2.belnet.be: type AAAA, class IN, addr 2001:6a8:3c80:c000::40
- Name: ns2.belnet.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 16
- AAAA Address: 2001:6a8:3c80:c000::40
- ns3.belnet.be: type AAAA, class IN, addr 2001:610:188:441:145::7:163
- Name: ns3.belnet.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 16
- AAAA Address: 2001:610:188:441:145::7:163
- ns1.belnet.be: type AAAA, class IN, addr 2001:6a8:3c80::14
- Name: ns1.belnet.be
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 16
- AAAA Address: 2001:6a8:3c80::14
- ns2.belnet.be: type A, class IN, addr 193.190.182.40
- Name: ns2.belnet.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 4
- Address: 193.190.182.40
- ns3.belnet.be: type A, class IN, addr 145.0.7.163
- Name: ns3.belnet.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 4
- Address: 145.0.7.163
- ns1.belnet.be: type A, class IN, addr 193.190.198.14
- Name: ns1.belnet.be
- Type: A (Host Address) (1)
- Class: IN (0x0001)
- Time to live: 86400
- Data length: 4
- Address: 193.190.198.14
0000
76
ba
01
20
00
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00
00
00
00
00
03
77
77
77
0010
13
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70
75
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65
72
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65
74
77
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- Domain Name System (query)
- Transaction ID: 0x76ba
- Flags: 0x0120 Standard query
- 0... .... .... .... = Response: Message is a query
- .000 0... .... .... = Opcode: Standard query (0)
- .... ..0. .... .... = Truncated: Message is not truncated
- .... ...1 .... .... = Recursion desired: Do query recursively
- .... .... .0.. .... = Z: reserved (0)
- .... .... ..1. .... = AD bit: Set
- .... .... ...0 .... = Non-authenticated data: Unacceptable
- Questions: 1
- Answer RRs: 0
- Authority RRs: 0
- Additional RRs: 0
- Queries
- www.computer-networking.info: type AAAA, class IN
- Name: www.computer-networking.info
- Type: AAAA (IPv6 Address) (28)
- Class: IN (0x0001)