Трассировка dns запросов
Я очень часто видел как используют утилиту dnstrace. Это конечно все замечательно, но как оказалось недавно, устанавливать ее мне нет необходимости, так как мой любимый dns-инструмент dig умеет показывать данные трассировки dns запросов.
Для этого необходимо использовать параметр +trace:
dig +trace nightbook.info
результат
; <<>> DiG 9.9.3-P2 <<>> +trace nightbook.info
;; global options: +cmd
. 513318 IN NS h.root-servers.net.
. 513318 IN NS a.root-servers.net.
. 513318 IN NS i.root-servers.net.
. 513318 IN NS b.root-servers.net.
. 513318 IN NS e.root-servers.net.
. 513318 IN NS g.root-servers.net.
. 513318 IN NS l.root-servers.net.
. 513318 IN NS j.root-servers.net.
. 513318 IN NS k.root-servers.net.
. 513318 IN NS c.root-servers.net.
. 513318 IN NS m.root-servers.net.
. 513318 IN NS d.root-servers.net.
. 513318 IN NS f.root-servers.net.
. 516807 IN RRSIG NS 8 0 518400 20131105000000 20131028230000 59085 . BnEqF0BizhMkLOMl8toff2bIDQ9h78IzAv4TSz25/h4Ne22ekj1FA61l 1SjWJxmw7tTkpckNNi5Zzpoe8Blb+6PnwuXDQjVeMZonj5ZoMSq8ILfC sfjqNtEBVPE+7McHGNESQiozLrl/zmzn0Qj5/rciqisE7kJ64BzLzClI uho=
;; Received 397 bytes from 127.0.0.1#53(127.0.0.1) in 1088 ms
info. 172800 IN NS c0.info.afilias-nst.info.
info. 172800 IN NS d0.info.afilias-nst.org.
info. 172800 IN NS a0.info.afilias-nst.info.
info. 172800 IN NS a2.info.afilias-nst.info.
info. 172800 IN NS b2.info.afilias-nst.org.
info. 172800 IN NS b0.info.afilias-nst.org.
info. 86400 IN DS 54531 7 2 E2D262469CB998642F772610A77AAEABB84A4F71CF40B9E30C03B9C9 E1F6409C
info. 86400 IN DS 54531 7 1 93D30693C59CD11646CEAA77DCED10DA13BEEDE9
info. 86400 IN RRSIG DS 8 1 86400 20131105000000 20131028230000 59085 . NcQS+NkyM3YoDzOF15ZmwaAXHriPwtuxhZgtkPpqGG62gN9RD3klIvWF sHYXgqdenRCzlrwYI19LmBkRsi4dn57KR9C//tGfpMXY1CB/KeNe4G2k dThQuvAwNu10kjYBPZ1+AoUgUIrlPArSoXL7BiqkQyAeTsLRA5NqCi35 rVU=
;; Received 689 bytes from 192.228.79.201#53(b.root-servers.net) in 1454 ms
nightbook.info. 86400 IN NS ns1.monikerdns.net.
nightbook.info. 86400 IN NS ns4.monikerdns.net.
nightbook.info. 86400 IN NS ns2.monikerdns.net.
nightbook.info. 86400 IN NS ns3.monikerdns.net.
adnsd9nk7nk82he8h21rj0jjhj11o5gb.info. 3600 IN NSEC3 1 1 1 D399EAAB ADOJTBS97KPOJ9RRLCDTTRAV4S82HOOG NS SOA RRSIG DNSKEY NSEC3PARAM
adnsd9nk7nk82he8h21rj0jjhj11o5gb.info. 3600 IN RRSIG NSEC3 7 2 3600 20131119220757 20131029210757 55104 info. YcUkJzwds+A8ZpxgHi7BeSwvmfxTqrXcoiyrB4HLzEyte0zhoA3IgXzt oS/mvIk60nDmQzdsta+W/cSUIrN1y2C3QrpmrE1ZnOVFpBGaKnyRLdh/ V2YFhK4eJVnRKYslxiBhR8sVhbEfU8j3G3oMQ7/Wn8mVJEoBcwxF+o5N x2E=
qutjqk7sklc63d79jcbbss3m54spts77.info. 3600 IN NSEC3 1 1 1 D399EAAB QUV96J317FLA6OLMF1M62O19LLHN0TRC
qutjqk7sklc63d79jcbbss3m54spts77.info. 3600 IN RRSIG NSEC3 7 2 3600 20131115154749 20131025144749 55104 info. kHu1HuIl/Pfq0aGZJ1P1o7RY0sLJSI+7RQ2CHrZvZqn3rUY2adS0e3nd Lswymm9vpkTetO4fSkdekBb2TEtl5E64XKDIDzgz48jM0X23Ac6mAoZP 6fCd5KGLpCx0eR0393TEO8M8/aO4SKWzBWDQh+xycyMB/h2OawuCZEp/ 9G8=
;; Received 616 bytes from 199.254.48.1#53(b0.info.afilias-nst.org) in 427 ms
nightbook.info. 7200 IN A 212.115.233.165
nightbook.info. 7200 IN NS ns2.monikerdns.net.
nightbook.info. 7200 IN NS ns1.monikerdns.net.
nightbook.info. 7200 IN NS ns4.monikerdns.net.
nightbook.info. 7200 IN NS ns3.monikerdns.net.
;; Received 209 bytes from 207.189.109.117#53(ns1.monikerdns.net) in 191 ms