Essayons de trouver lafibre :
> lafibre.info
Serveur : a.root-servers.net
Addresses: 2001:503:ba3e::2:30
198.41.0.4
info nameserver = a0.info.afilias-nst.info
info nameserver = a2.info.afilias-nst.info
info nameserver = b0.info.afilias-nst.org
info nameserver = b2.info.afilias-nst.org
info nameserver = c0.info.afilias-nst.info
info nameserver = d0.info.afilias-nst.org
(...)
a0.info.afilias-nst.info AAAA IPv6 address = 2001:500:19::1
(...)
> lafibre.info
Serveur : [2001:500:19::1]
Address: 2001:500:19::1
lafibre.info nameserver = dns10.ovh.net
lafibre.info nameserver = ns10.ovh.net
Là les IP ne sont pas indiquées, on peut le voir dans le mode debug :
------------
Got answer:
HEADER:
opcode = QUERY, id = 16, rcode = NOERROR
header flags: response, want recursion
questions = 1, answers = 0, authority records = 2, additional = 0
QUESTIONS:
lafibre.info, type = NS, class = IN
AUTHORITY RECORDS:
-> lafibre.info
nameserver = dns10.ovh.net
ttl = 86400 (1 day)
-> lafibre.info
nameserver = ns10.ovh.net
ttl = 86400 (1 day)
------------
On repart des roots :
Serveur : a.root-servers.net
Addresses: 2001:503:ba3e::2:30
198.41.0.4
Nom : dns10.ovh.net
Served by:
- a.gtld-servers.net
192.5.6.30
2001:503:a83e::2:30
net
- b.gtld-servers.net
192.33.14.30
net
- c.gtld-servers.net
192.26.92.30
net
(...)
Serveur : [192.26.92.30]
Address: 192.26.92.30
Nom : dns10.ovh.net
Served by:
- ns10.ovh.net
2001:41d0:1:1981::1
213.251.128.129
ovh.net
- dns15.ovh.net
2001:41d0:1:4a86::1
213.251.188.134
ovh.net
(...)
Les adresses IP sont indiquées, on continue :
Serveur : [2001:41d0:1:4a86::1]
Address: 2001:41d0:1:4a86::1
------------
Got answer:
HEADER:
opcode = QUERY, id = 28, rcode = NOERROR
header flags: response, auth. answer, want recursion
questions = 1, answers = 1, authority records = 0, additional = 0
QUESTIONS:
dns10.ovh.net, type = A, class = IN
ANSWERS:
-> dns10.ovh.net
internet address = 213.251.188.129
ttl = 86400 (1 day)
------------
------------
Got answer:
HEADER:
opcode = QUERY, id = 29, rcode = NOERROR
header flags: response, auth. answer, want recursion
questions = 1, answers = 1, authority records = 0, additional = 0
QUESTIONS:
dns10.ovh.net, type = AAAA, class = IN
ANSWERS:
-> dns10.ovh.net
AAAA IPv6 address = 2001:41d0:1:4a81::1
ttl = 86400 (1 day)
------------
Nom : dns10.ovh.net
Addresses: 2001:41d0:1:4a81::1
213.251.188.129
Enfin on a trouvé l'adresse du serveur qui a l'information recherchée!