Contents
1. jp.sharp ドメイン
2. NXDOMAIN 返答
SOA がおかしい返答が返るが、 これがどう扱われるか。(無視されるのでは)
$ dig -t any qmail.jp.sharp @ns1.sharp.co.jp ; <<>> DiG 9.16.1-Ubuntu <<>> -t any qmail.jp.sharp @ns1.sharp.co.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49143 ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: 125424ce30f46a8ae0822bdb5f9c950b8e151ccfec36f12f (good) ;; QUESTION SECTION: ;qmail.jp.sharp. IN ANY ;; AUTHORITY SECTION: sharp. 600 IN SOA ns1.sharp.co.jp. postmaster.sharp.co.jp. 2020103001 3600 1800 1209600 3600 ;; Query time: 11 msec ;; SERVER: 61.214.248.154#53(61.214.248.154) ;; WHEN: 土 10月 31 07:34:51 JST 2020 ;; MSG SIZE rcvd: 133
3. DNSSEC
なし。 (設定失敗で見えなくなっていたか)
4. ところが
jp.sharp. 300 IN CNAME ualsharp.hs.llnwd.net.
69.28.187.147
69.28.157.216
Limelight Networks, Inc.
2020-02-20 (8 months ago) 2020-10-27 (today) 8 months $ dig -t ns jp.sharp @a.gmoregistry.net. ; <<>> DiG 9.16.1-Ubuntu <<>> -t ns jp.sharp @a.gmoregistry.net. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57749 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;jp.sharp. IN NS ;; AUTHORITY SECTION: jp.sharp. 86400 IN NS tg1.sharp.co.jp. jp.sharp. 86400 IN NS ns1.sharp.co.jp. ;; Query time: 8 msec ;; SERVER: 37.209.192.4#53(37.209.192.4) ;; WHEN: 火 10月 27 14:47:39 JST 2020 ;; MSG SIZE rcvd: 84
5. jp.sharp
???
$ dig -t ns jp.sharp @ns1.sharp.co.jp. ; <<>> DiG 9.16.1-Ubuntu <<>> -t ns jp.sharp @ns1.sharp.co.jp. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48837 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: 0e4542cda66b78d5702eb6c45f97b1119b4314c8758a9cbd (good) ;; QUESTION SECTION: ;jp.sharp. IN NS ;; ANSWER SECTION: jp.sharp. 300 IN CNAME ualsharp.hs.llnwd.net. ;; Query time: 20 msec ;; SERVER: 61.214.248.154#53(61.214.248.154) ;; WHEN: 火 10月 27 14:33:05 JST 2020 ;; MSG SIZE rcvd: 100
6. history
cocorolife.jp.sharp. 301 IN CNAME ualsharp.hs.llnwd.net. ualsharp.hs.llnwd.net. 59 IN A 111.119.27.78 ualsharp.hs.llnwd.net. 59 IN A 111.119.27.166
7. ???
なにさま?
$ dig -t any jp.sharp @ns1.sharp.co.jp ; <<>> DiG 9.16.1-Ubuntu <<>> -t any jp.sharp @ns1.sharp.co.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4197 ;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 2, ADDITIONAL: 3 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: 82d2d238ff325a00987ad38f5f97dd5e9070e1ffb2a1eab3 (good) ;; QUESTION SECTION: ;jp.sharp. IN ANY ;; ANSWER SECTION: jp.sharp. 300 IN CNAME ualsharp.hs.llnwd.net. jp.sharp. 300 IN RRSIG CNAME 8 2 300 20201118004422 20201019004422 26718 sharp. LsH+oUWxdZrqj61zD9MTNPpi9WEZjT5OIlpCyMxgTCT90Q8WS0oLftWO ki1nP4TNKfBAAfC4C70oiTc4t+ys0GQwnR7TEtv5VoN3kJx/89yQkCWU Kt9Oil8wr8ZjRj9/UbAgc+z+MgpuB/Qsmf9PlgtUpCGSTjtxP22klNv/ lVE= jp.sharp. 3600 IN NSEC aquos-emm.jp.sharp. CNAME RRSIG NSEC jp.sharp. 3600 IN RRSIG NSEC 8 2 3600 20201118004422 20201019004422 26718 sharp. lJjt52yhc08eTZgLkpRFY30bXHYh7YAZGuvPwI6acTD34tnWSrsp1Ssu dzQGIpoaNDPyp9Irr2gHIY8+mOk2lfw6ANOitYiLIxdlZ7F8LrqdMsTE NjuYoeSix0yuj1HzQkVaN7YRU1iuofOD53YiecqaxO26MV8zm1EsXo7C d+8= ;; AUTHORITY SECTION: sharp. 43200 IN NS tg1.sharp.co.jp. sharp. 43200 IN NS ns1.sharp.co.jp. ;; ADDITIONAL SECTION: ns1.sharp.co.jp. 43200 IN A 61.214.248.154 tg1.sharp.co.jp. 60 IN A 61.214.248.155 ;; Query time: 16 msec ;; SERVER: 61.214.248.154#53(61.214.248.154) ;; WHEN: 火 10月 27 17:42:06 JST 2020 ;; MSG SIZE rcvd: 549