似乎国外 dns 查不到 V2EX 的 IP 了。应该跟功夫网没关系。

DNS 参考资料

› dnslib for Python

This topic created in 4042 days ago, the information mentioned may be changed or developed.

如图，用阿里和114查询www.v2ex.com能查到，四个八和openDNS查不到。

～/rails/ewhine_NB (5.0.0_dev)$ dig @114.114.114.114 www.v2ex.com

; <<>> DiG 9.8.1-P1 <<>> @114.114.114.114 www.v2ex.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62627
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.v2ex.com.          IN  A

;; ANSWER SECTION:
www.v2ex.com.       1032    IN  CNAME   v2ex.global.zgslb.net.
v2ex.global.zgslb.net.  161 IN  CNAME   v2ex.china.uxengine.net.
v2ex.china.uxengine.net. 30 IN  A   222.187.0.66

;; Query time: 26 msec
;; SERVER: 114.114.114.114#53(114.114.114.114)
;; WHEN: Fri May 15 16:37:22 2015
;; MSG SIZE  rcvd: 115

~/rails/ewhine_NB (5.0.0_dev)$ dig @223.5.5.5 www.v2ex.com

; <<>> DiG 9.8.1-P1 <<>> @223.5.5.5 www.v2ex.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31650
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.v2ex.com.          IN  A

;; ANSWER SECTION:
www.v2ex.com.       15  IN  CNAME   v2ex.global.zgslb.net.
v2ex.global.zgslb.net.  15  IN  CNAME   v2ex.china.uxengine.net.
v2ex.china.uxengine.net. 15 IN  A   222.187.0.66

;; Query time: 58 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Fri May 15 16:37:27 2015
;; MSG SIZE  rcvd: 115

nagae-memooff@nagae-memooff:~$ dig @8.8.8.8 www.v2ex.com

; <<>> DiG 9.9.5-3ubuntu0.2-Ubuntu <<>> @8.8.8.8 www.v2ex.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58565
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.v2ex.com.          IN  A

;; ANSWER SECTION:
www.v2ex.com.       1769    IN  CNAME   v2ex.global.zgslb.net.
v2ex.global.zgslb.net.  264 IN  CNAME   v2ex.china.uxengine.net.

;; AUTHORITY SECTION:
uxengine.net.       599 IN  SOA ns3.dnsv4.com. enterprise2dnsadmin.dnspod.com. 1431655787 3600 180 1209600 180

;; Query time: 246 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fri May 15 16:39:30 CST 2015
;; MSG SIZE  rcvd: 183

解析cname的时候，到了v2ex.china.uxengine.net之后，国内dns能给出IP，国外DNS就给不出IP了，这个跟GFW没关系，肯定不是dns劫持的事儿。

域名出了什么问题吗？

Supplement 1 · May 15, 2015

顺带，四个八和opendns的查询结果是在海外主机上做的，肯定不是功夫网的缘故。
现在我是暂时用223.5.5.5解析出来的结果写到本机的dns服务器里了。

cname

query

dig

16 replies • 2015-05-18 14:24:06 +08:00