D:\>nslookup.exe
-> server 8.8.8.8
Сервер по умолчанию: google-public-dns-a.google.com
Address: 8.8.8.8
-> ya.ru
Сервер: google-public-dns-a.google.com
Address: 8.8.8.8
non-authoritative answer:
Имя: ya.ru
Addresses: 2a02:6b8::3
213.180.193.3
213.180.204.3
93.158.134.3
-> www.af.mil
Сервер: google-public-dns-a.google.com
Address: 8.8.8.8
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Timed out request: google-public-dns-a.google.com
>
UPD。从 Digtial Ocean 虚拟主机解析 .mil 区域
$ nslookup
> www.af.mil
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
www.af.mil canonical name = www.af.mil.edgesuite.net.
www.af.mil.edgesuite.net canonical name = a499.dscb.akamai.net.
Name: a499.dscb.akamai.net
Address: 2.21.243.59
Name: a499.dscb.akamai.net
Address: 2.21.243.75
现在让我们切换到俄罗斯公共 DNS 服务器
> server dns.yandex.ru
Default server: dns.yandex.ru
Address: 77.88.8.8#53
Default server: dns.yandex.ru
Address: 2a02:6b8::feed:ff#53
> www.af.mil
;; Got SERVFAIL reply from 77.88.8.8, trying next server
;; connection timed out; no servers could be reached
哎呀！发生什么事了？？？