; <<>> DiG 9.4.1-P1 <<>> +trace +all pku.edu.cn soa ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1426 ;; flags: qr ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 14 ;; QUESTION SECTION: ;. IN NS ;; ANSWER SECTION: . 220493 IN NS e.root-servers.net. . 220493 IN NS m.root-servers.net. . 220493 IN NS j.root-servers.net. . 220493 IN NS h.root-servers.net. . 220493 IN NS d.root-servers.net. . 220493 IN NS c.root-servers.net. . 220493 IN NS g.root-servers.net. . 220493 IN NS k.root-servers.net. . 220493 IN NS f.root-servers.net. . 220493 IN NS a.root-servers.net. . 220493 IN NS l.root-servers.net. . 220493 IN NS i.root-servers.net. . 220493 IN NS b.root-servers.net. ;; ADDITIONAL SECTION: a.root-servers.net. 89816 IN A 198.41.0.4 a.root-servers.net. 89816 IN AAAA 2001:503:ba3e::2:30 b.root-servers.net. 48080 IN A 192.228.79.201 c.root-servers.net. 435864 IN A 192.33.4.12 d.root-servers.net. 394213 IN A 128.8.10.90 d.root-servers.net. 394213 IN AAAA 2001:500:2d::d e.root-servers.net. 45400 IN A 192.203.230.10 f.root-servers.net. 90687 IN A 192.5.5.241 f.root-servers.net. 395563 IN AAAA 2001:500:2f::f g.root-servers.net. 91351 IN A 192.112.36.4 h.root-servers.net. 48389 IN A 128.63.2.53 h.root-servers.net. 48389 IN AAAA 2001:500:1::803f:235 i.root-servers.net. 89923 IN A 192.36.148.17 i.root-servers.net. 89923 IN AAAA 2001:7fe::53 ;; Query time: 7 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Tue May 22 13:03:08 2012 ;; MSG SIZE rcvd: 512 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 824 ;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 8 ;; QUESTION SECTION: ;pku.edu.cn. IN SOA ;; AUTHORITY SECTION: cn. 172800 IN NS a.dns.cn. cn. 172800 IN NS c.dns.cn. cn. 172800 IN NS ns.cernet.net. cn. 172800 IN NS d.dns.cn. cn. 172800 IN NS b.dns.cn. cn. 172800 IN NS e.dns.cn. ;; ADDITIONAL SECTION: a.dns.cn. 172800 IN A 203.119.25.1 b.dns.cn. 172800 IN A 203.119.26.1 c.dns.cn. 172800 IN A 203.119.27.1 d.dns.cn. 172800 IN A 203.119.28.1 e.dns.cn. 172800 IN A 203.119.29.1 ns.cernet.net. 172800 IN A 202.112.0.44 a.dns.cn. 172800 IN AAAA 2001:dc7::1 d.dns.cn. 172800 IN AAAA 2001:dc7:1000::1 ;; Query time: 125 msec ;; SERVER: 2001:dc3::35#53(m.root-servers.net) ;; WHEN: Tue May 22 13:03:08 2012 ;; MSG SIZE rcvd: 291 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 498 ;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 2 ;; QUESTION SECTION: ;pku.edu.cn. IN SOA ;; AUTHORITY SECTION: edu.cn. 172800 IN NS deneb.dfn.de. edu.cn. 172800 IN NS dns.edu.cn. edu.cn. 172800 IN NS ns2.cuhk.hk. edu.cn. 172800 IN NS ns2.cernet.net. edu.cn. 172800 IN NS dns2.edu.cn. ;; ADDITIONAL SECTION: dns.edu.cn. 172800 IN A 202.112.0.35 dns2.edu.cn. 172800 IN A 202.112.0.13 ;; Query time: 192 msec ;; SERVER: 2001:dc7::1#53(a.dns.cn) ;; WHEN: Tue May 22 13:03:08 2012 ;; MSG SIZE rcvd: 176 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1810 ;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 3 ;; QUESTION SECTION: ;pku.edu.cn. IN SOA ;; AUTHORITY SECTION: pku.edu.cn. 172800 IN NS NS.pku.edu.cn. pku.edu.cn. 172800 IN NS NS2.CUHK.EDU.HK. pku.edu.cn. 172800 IN NS SUN1000E.pku.edu.cn. pku.edu.cn. 172800 IN NS PKUNS.pku.edu.cn. ;; ADDITIONAL SECTION: NS.pku.edu.cn. 172800 IN A 202.112.7.13 PKUNS.pku.edu.cn. 172800 IN A 162.105.129.27 SUN1000E.pku.edu.cn. 172800 IN A 162.105.129.26 ;; Query time: 271 msec ;; SERVER: 2001:250:c006::8#53(ns2.cernet.net) ;; WHEN: Tue May 22 13:03:08 2012 ;; MSG SIZE rcvd: 165 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1688 ;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 3 ;; QUESTION SECTION: ;pku.edu.cn. IN SOA ;; ANSWER SECTION: pku.edu.cn. 3600 IN SOA ns.pku.edu.cn. hostmaster.pku.edu.cn. 2012051402 3600 900 604800 86400 ;; AUTHORITY SECTION: pku.edu.cn. 3600 IN NS ns2.cuhk.hk. pku.edu.cn. 3600 IN NS pkuns.pku.edu.cn. pku.edu.cn. 3600 IN NS sun1000e.pku.edu.cn. pku.edu.cn. 3600 IN NS ns.pku.edu.cn. ;; ADDITIONAL SECTION: ns.pku.edu.cn. 3600 IN A 202.112.7.13 pkuns.pku.edu.cn. 3600 IN A 162.105.129.27 sun1000e.pku.edu.cn. 3600 IN A 162.105.129.26 ;; Query time: 159 msec ;; SERVER: 202.112.7.13#53(NS.pku.edu.cn) ;; WHEN: Tue May 22 13:03:09 2012 ;; MSG SIZE rcvd: 208
; <<>> DiG 9.4.1-P1 <<>> www.pku.edu.cn aaaa ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1021 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;www.pku.edu.cn. IN AAAA ;; ANSWER SECTION: www.pku.edu.cn. 3599 IN CNAME www.lb.pku.edu.cn. ;; AUTHORITY SECTION: lb.pku.edu.cn. 3599 IN SOA ns30.pku.edu.cn. hostmaster.pku.edu.cn. 2012050203 3600 900 604800 86400 ;; Query time: 5 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Tue May 22 13:03:10 2012 ;; MSG SIZE rcvd: 105
Checking other options ...
succeeded as www.ipv6.pku.edu.cn.
Connection failed: IO::Socket::INET6: connect: No route to host
no answer from 2001:da8:201:1129:217:a4ff:fe8e:fc0e
1 2001:44b8:60::1 0.687 ms 0.617 ms 0.451 ms 2 2001:44b8:8060:1d::6 0.830 ms 0.822 ms 0.637 ms 3 2001:44b8:8060:34::1 0.747 ms 0.925 ms 0.542 ms 4 2001:44b8:b060:7::2 21.590 ms 20.237 ms 19.996 ms 5 2001:44b8:b070:1::12 20.207 ms 20.269 ms 20.156 ms 6 2001:44b8:f0a0:5::1 121.010 ms 121.270 ms 121.226 ms 7 2001:218:2000:5000::15 121.021 ms 121.079 ms 120.934 ms 8 2001:218:0:2000::91 181.541 ms 122.417 ms 223.196 ms 9 2001:218:0:2000::13e 173.449 ms 175.136 ms 173.541 ms 10 2001:218:0:2000::159 174.988 ms 174.369 ms 174.152 ms 11 2001:218:0:6000::156 174.311 ms 174.532 ms 174.117 ms 12 2001:7fa:0:1::ca28:a1be 142.541 ms 142.128 ms 141.307 ms 13 2001:252:0:101::1 193.488 ms 194.134 ms 194.961 ms 14 2001:252:0:1::1 189.171 ms 189.263 ms 188.016 ms 15 2001:da8:1:1b::2 189.018 ms 191.076 ms 188.265 ms 16 2001:da8:1:50d::2 189.969 ms 190.722 ms 190.660 ms 17 2001:da8:ac:fff1::2 190.900 ms 191.348 ms 190.230 ms 18 2001:da8:201:fffe::7 191.112 ms 191.910 ms 190.456 ms 19 * 2001:da8:201:fffe::7 3187.656 ms !A 3188.901 ms !A
Last Updated: Tue May 22 03:37:17 2012 UTC