watchDNS/japan.usembassy.govについて、ここに記述してください。 キャッシュの毒盛検査に使えそうな設定だ。 query の返答だけで調べられるなら、おもしろいが。　-- ToshinoriMaeno <> TTLを観察していれば、なにか分かるかもしれない。 $ dnsq ns japan.usembassy.gov a.gov-servers.net {{{ 2 japan.usembassy.gov: 98 bytes, 1+0+2+0 records, response, noerror query: 2 japan.usembassy.gov authority: usembassy.gov 86400 NS ns1.terrenap.net authority: usembassy.gov 86400 NS ns2.terrenap.net }}} これが権威サーバの返事と言えるか。 tmaeno@:~$ dnsq ns japan.usembassy.gov ns1.terrenap.net {{{ 2 japan.usembassy.gov: 459 bytes, 1+3+9+9 records, response, authoritative, weird ra, noerror query: 2 japan.usembassy.gov answer: japan.usembassy.gov 10800 CNAME www.state.gov.edgesuite.net answer: www.state.gov.edgesuite.net 859 CNAME state.georedirector.state.akadns.net answer: state.georedirector.state.akadns.net 229 CNAME a442.g.akamai.net authority: g.akamai.net 823 NS n2g.akamai.net authority: g.akamai.net 823 NS n8g.akamai.net authority: g.akamai.net 823 NS n0g.akamai.net authority: g.akamai.net 823 NS n4g.akamai.net authority: g.akamai.net 823 NS n1g.akamai.net authority: g.akamai.net 823 NS n7g.akamai.net authority: g.akamai.net 823 NS n6g.akamai.net authority: g.akamai.net 823 NS n5g.akamai.net authority: g.akamai.net 823 NS n3g.akamai.net additional: n0g.akamai.net 879 A 96.17.74.217 additional: n1g.akamai.net 1012 A 96.17.74.216 additional: n2g.akamai.net 1443 A 96.17.74.216 additional: n3g.akamai.net 125 A 72.246.25.61 additional: n4g.akamai.net 2590 A 72.246.25.31 additional: n5g.akamai.net 1019 A 72.246.25.23 additional: n6g.akamai.net 110 A 72.246.25.63 additional: n7g.akamai.net 1408 A 72.246.25.31 additional: n8g.akamai.net 2094 A 72.246.25.23 }}}