google.cn 的解析確實是變了。坐標北京聯通:
$ dig
www.google.cn +trace
; <<>> DiG 9.10.3-P2-RedHat-9.10.3-7.P2.fc23 <<>>
www.google.cn;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19300
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1280
;; QUESTION SECTION:
;
www.google.cn. IN A
;; ANSWER SECTION:
www.google.cn. 117 IN A 64.233.189.160
;; Query time: 2 msec
;; SERVER: 10.11.0.1#53(10.11.0.1)
;; WHEN: Sat Jan 23 16:08:43 CST 2016
;; MSG SIZE rcvd: 58
[vfreex@rayson-blackchan ~]$ dig
www.google.cn +trace
; <<>> DiG 9.10.3-P2-RedHat-9.10.3-7.P2.fc23 <<>>
www.google.cn +trace
;; global options: +cmd
. 290918 IN NS
i.root-servers.net.
. 290918 IN NS
j.root-servers.net.
. 290918 IN NS
k.root-servers.net.
. 290918 IN NS
l.root-servers.net.
. 290918 IN NS
m.root-servers.net.
. 290918 IN NS
a.root-servers.net.
. 290918 IN NS
b.root-servers.net.
. 290918 IN NS
c.root-servers.net.
. 290918 IN NS
d.root-servers.net.
. 290918 IN NS
e.root-servers.net.
. 290918 IN NS
f.root-servers.net.
. 290918 IN NS
g.root-servers.net.
. 290918 IN NS
h.root-servers.net.
;; Received 239 bytes from 10.11.0.1#53(10.11.0.1) in 14 ms
cn. 172800 IN NS
d.dns.cn.
cn. 172800 IN NS
b.dns.cn.
cn. 172800 IN NS
ns.cernet.net.
cn. 172800 IN NS
a.dns.cn.
cn. 172800 IN NS
e.dns.cn.
cn. 172800 IN NS
c.dns.cn.
cn. 86400 IN DS 24697 8 2 A8BD8346D72C8C08FCE76D85298A8D58025323487122C5354D6E34AD 857498E3
cn. 86400 IN RRSIG DS 8 1 86400 20160202050000 20160123040000 54549 . S+WFT1uFr9yuYwtE8+w4UKXwcQQRtZPcFNUr8MkgP8+NmQ+eGNJCV/Qj mUCIg17L50kHgWijjYubk3Lctq1ZuVPP6Hayjjz5zZIekYW/5qi4LcoJ EO6pcdgZQUfL7/adoX9Pf5CdY6D/FAkDjqBgr2UvWEoGgY5rD7yfBTdo YeQ=
;; Received 512 bytes from 192.112.36.4#53(
g.root-servers.net) in 328 ms
google.cn. 86400 IN NS
ns1.google.com.
google.cn. 86400 IN NS
ns4.google.com.
google.cn. 86400 IN NS
ns3.google.com.
google.cn. 86400 IN NS
ns2.google.com.
3QDAQA092EE5BELP64A74EBNB8J53D7E.cn. 21600 IN NSEC3 1 1 10 AEF123AB 3QLMP0QRNQ96G5AFGOPNB7U7IJ4MBP4B NS SOA RRSIG DNSKEY NSEC3PARAM
3QDAQA092EE5BELP64A74EBNB8J53D7E.cn. 21600 IN RRSIG NSEC3 8 2 21600 20160204095230 20160105085239 10680 cn. prOlIUtwQhqsnPUz8N3XVdNkZ8h7JQfLUZrQGuTHXC5vPDOF8vBOClEM SzzObVb6FR5acEL0HFNsKncyPbVraBxGvMd1h0a6MGPI6QBLvBNpCQya cgvkQa2rhl6zvFWfWnfQsFwvLtASI+5dGDcWrIf36GjmFW8yNBx3tnXX ANU=
8TM10SUG7NMG1C1GU6KIL3P61OE3JKI2.cn. 21600 IN NSEC3 1 1 10 AEF123AB 8TN7D4R99B9F9CM0C56QGJVQNGD0TU04 CNAME RRSIG
8TM10SUG7NMG1C1GU6KIL3P61OE3JKI2.cn. 21600 IN RRSIG NSEC3 8 2 21600 20160201024418 20160102022048 10680 cn. u63loHTk3l8QBnnWtDu0an0l9PtMpSSnBa1Ch94HTKAyUlo/KmjjGkzu 38YiLEFpI2r4STglBAlIysQyLEO2NouP+VTfQWT9k4VejxE2qjz/wVUC 5pBs8YuWjRo6wwRSYDVDs7vxxSdQSyS5h0cVa+9+CW4BWLG/iog74q5q TNM=
;; Received 615 bytes from 2001:dc7:1000::1#53(
d.dns.cn) in 264 ms
www.google.cn. 300 IN A 64.233.189.160
$ mtr 64.233.189.160
;; Received 47 bytes from 216.239.36.10#53(
ns3.google.com) in 409 ms
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. ************* 0.0% 14 1.2 27.7 1.1 368.4 98.1
2. ************* 0.0% 14 4.7 37.2 4.7 310.9 85.1
3. 61.148.174.185 38.5% 14 6.1 5.2 2.7 9.0 2.0
4. 61.51.113.145 0.0% 14 6.9 20.1 5.8 185.2 47.5
5. 123.126.0.57 0.0% 14 7.9 17.0 5.5 124.7 31.1
6. 219.158.7.18 0.0% 14 35.5 52.3 35.4 135.2 28.2
7. 219.158.11.202 0.0% 14 191.2 144.1 78.6 191.2 36.0
8. 219.158.19.89 15.4% 14 162.3 160.5 109.1 289.5 50.9
9. 219.158.97.254 0.0% 13 230.6 201.7 115.1 290.7 55.8
10. 219.158.33.174 7.7% 13 197.4 163.7 106.3 364.3 71.4
11. 209.85.241.56 0.0% 13 193.6 181.0 115.5 301.4 48.5
12. 216.239.40.35 16.7% 13 193.7 155.7 116.6 239.3 35.2
13. 216.239.57.239 0.0% 13 412.7 388.3 316.3 508.4 53.2
14. 64.233.175.209 25.0% 13 259.8 279.1 190.2 750.8 179.0
15. ???
16.
tl-in-f160.1e100.net 8.3% 13 442.8 459.9 379.9 806.7 118.2