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8.8.8.8是什么ip地址

發布時間: 2012/7/27 17:23:46

8.8.8.8是Google提供的免費DNS服務器的IP地址，Google提供的另外一個免費DNS服務器的IP地址是：8.8.4.4 。用戶可以使用Google提供的DNS服務器上網。

Google今天又給了我們一個驚喜，并沉重的打擊了OpenDNS：他們剛剛宣布向所有的互聯網用戶提供一組快速，安全并且完全免費的DNS解析服務器，地址分別是：8.8.8.8 8.8.4.4 我想這組ip看過后沒有人會忘記吧？如果你用本地的DNS經常會出現不能訪問一些特殊網站的情況，或者提示一些域名無法解析，不妨試試google的這一組DNS地址，或許會有驚喜哦！

經本人測試可用。有人說4.4.4.4和4.3.2.1也是，經過我測試，這兩個IP可以ping通，但并不能做DNS 解析。

下面是測試經過：電腦常識www.boydavid.com

zhouhh@zhhofs:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=240 time=200 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=240 time=84.7 ms
^C
--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 84.771/142.731/200.691/57.960 ms
zhouhh@zhhofs:~$ ping 8.8.4.4
PING 8.8.4.4 (8.8.4.4) 56(84) bytes of data.
64 bytes from 8.8.4.4: icmp_seq=1 ttl=240 time=111 ms
64 bytes from 8.8.4.4: icmp_seq=2 ttl=240 time=113 ms
^C
--- 8.8.4.4 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 111.370/112.358/113.346/0.988 ms
zhouhh@zhhofs:~$ ping 4.3.2.1
PING 4.3.2.1 (4.3.2.1) 56(84) bytes of data.
64 bytes from 4.3.2.1: icmp_seq=1 ttl=240 time=107 ms
64 bytes from 4.3.2.1: icmp_seq=2 ttl=240 time=102 ms
^C
--- 4.3.2.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 102.059/104.628/107.198/2.589 ms
zhouhh@zhhofs:~$ nslookup 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
8.8.8.8.in-addr.arpa name = google-public-dns-a.google.com.
Authoritative answers can be found from:
zhouhh@zhhofs:~$ nslookup 8.8.4.4
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
4.4.8.8.in-addr.arpa name = google-public-dns-b.google.com.
Authoritative answers can be found from:
zhouhh@zhhofs:~$ nslookup 4.4.4.4
Server: 8.8.8.8
Address: 8.8.8.8#53
** server can't find 4.4.4.4.in-addr.arpa.: NXDOMAIN
zhouhh@zhhofs:~$ nslookup 4.3.2.1

Server: 8.8.8.8
Address: 8.8.8.8#53
** server can't find 1.2.3.4.in-addr.arpa: SERVFAIL
zhouhh@zhhofs:~$ nslookup 1.2.3.4
Server: 8.8.8.8
Address: 8.8.8.8#53
** server can't find 4.3.2.1.in-addr.arpa.: NXDOMAIN
zhouhh@zhhofs:~$ nslookup
> server 8.8.8.8
Default server: 8.8.8.8
Address: 8.8.8.8#53
> set type=a
> google.com
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: google.com
Address: 74.125.53.100
Name: google.com
Address: 74.125.67.100
Name: google.com
Address: 74.125.45.100
> sohu.com
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: sohu.com
Address: 61.135.181.176
Name: sohu.com
Address: 61.135.181.175
> server 4.4.4.4
Default server: 4.4.4.4
Address: 4.4.4.4#53
> set type a
*** Invalid option: type
> set type = a
*** Invalid option: type
> set type=a
> google.com
^C
解析失敗，超時

zhouhh@zhh64:~$ nslookup
> server 4.3.2.1
Default server: 4.3.2.1
Address: 4.3.2.1#53
> sohu.com
Server: 4.3.2.1
Address: 4.3.2.1#53

Non-authoritative answer:
Name: sohu.com
Address: 61.135.181.176
Name: sohu.com
Address: 61.135.181.175
> set type a
*** Invalid option: type
> set type = a
*** Invalid option: type
> set type=a
> sohu.com
Server: 4.3.2.1
Address: 4.3.2.1#53

Non-authoritative answer:
Name: sohu.com
Address: 61.135.181.175
Name: sohu.com
Address: 61.135.181.176
> server 4.4.4.4
Default server: 4.4.4.4
Address: 4.4.4.4#53
> set type=a
> sohu.com
^C
4.4.4.4不通，4.3.2.1是通的。
zhouhh@zhhofs:~$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=240 time=200 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=240 time=84.7 ms
^C
--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 84.771/142.731/200.691/57.960 ms
zhouhh@zhhofs:~$ ping 8.8.4.4
PING 8.8.4.4 (8.8.4.4) 56(84) bytes of data.
64 bytes from 8.8.4.4: icmp_seq=1 ttl=240 time=111 ms
64 bytes from 8.8.4.4: icmp_seq=2 ttl=240 time=113 ms
^C
--- 8.8.4.4 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 111.370/112.358/113.346/0.988 ms
zhouhh@zhhofs:~$ ping 4.3.2.1
PING 4.3.2.1 (4.3.2.1) 56(84) bytes of data.
64 bytes from 4.3.2.1: icmp_seq=1 ttl=240 time=107 ms
64 bytes from 4.3.2.1: icmp_seq=2 ttl=240 time=102 ms
^C
--- 4.3.2.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 102.059/104.628/107.198/2.589 ms
zhouhh@zhhofs:~$ nslookup 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
8.8.8.8.in-addr.arpa name = google-public-dns-a.google.com.
Authoritative answers can be found from:
zhouhh@zhhofs:~$ nslookup 8.8.4.4
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
4.4.8.8.in-addr.arpa name = google-public-dns-b.google.com.
Authoritative answers can be found from:
zhouhh@zhhofs:~$ nslookup 4.4.4.4
Server: 8.8.8.8
Address: 8.8.8.8#53
** server can't find 4.4.4.4.in-addr.arpa.: NXDOMAIN
zhouhh@zhhofs:~$ nslookup 4.3.2.1
Server: 8.8.8.8
Address: 8.8.8.8#53
** server can't find 1.2.3.4.in-addr.arpa: SERVFAIL
zhouhh@zhhofs:~$ nslookup 1.2.3.4
Server: 8.8.8.8
Address: 8.8.8.8#53
** server can't find 4.3.2.1.in-addr.arpa.: NXDOMAIN
zhouhh@zhhofs:~$ nslookup
> server 8.8.8.8
Default server: 8.8.8.8
Address: 8.8.8.8#53
> set type=a
> google.com
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: google.com
Address: 74.125.53.100
Name: google.com
Address: 74.125.67.100
Name: google.com
Address: 74.125.45.100
> sohu.com
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: sohu.com
Address: 61.135.181.176
Name: sohu.com
Address: 61.135.181.175
> server 4.4.4.4
Default server: 4.4.4.4
Address: 4.4.4.4#53
> set type a
*** Invalid option: type
> set type = a
*** Invalid option: type
> set type=a
> google.com
^C
解析失敗，超時

zhouhh@zhh64:~$ nslookup
> server 4.3.2.1
Default server: 4.3.2.1
Address: 4.3.2.1#53
> sohu.com
Server: 4.3.2.1
Address: 4.3.2.1#53

Non-authoritative answer:
Name: sohu.com
Address: 61.135.181.176
Name: sohu.com
Address: 61.135.181.175
> set type a
*** Invalid option: type
> set type = a
*** Invalid option: type
> set type=a
> sohu.com
Server: 4.3.2.1
Address: 4.3.2.1#53

Non-authoritative answer:
Name: sohu.com
Address: 61.135.181.175
Name: sohu.com
Address: 61.135.181.176
> server 4.4.4.4
Default server: 4.4.4.4
Address: 4.4.4.4#53
> set type=a
> sohu.com
^C
4.4.4.4不通，4.3.2.1是通的。

說明8.8.8.8，8.8.4.4可用。

后經補充測試， 4.3.2.1可用。電腦技術www.boydavid.com

8.8.8.8、8.8.4.4和4.3.2.1不用擔心域名綁架，但8.8.8.8、8.8.4.4和4.3.2.1有可能遭GFW封殺。

ps：后來一晚上給一個女生解決網絡問題，配IP地址，在DNS 配了8.8.8.8，結果她問，“DNS 這個隨便配一個就行了，是吧？” 8.8.8.8實在太吉祥太吉利太好記了，搞得大家都不相信。

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