1. watchA
NS, SOA なし。
- Empty Non Terminal !!
ns1.front.cdn.sharp ‐
cdn.sharp
www.cdn.sharp
www.sharp-world.com.front.cdn.sharp
cdn.sharp-eps-prod.edge.cdn.sharp
cdn.sharp-acs-stage.edge.cdn.sharp
cdn.sharp-acs-prod.edge.cdn.sharp
2. whois
cdn.sharp. 86400 IN NS tg1.sharp.co.jp. cdn.sharp. 86400 IN NS ns1.sharp.co.jp.
$ dig -t ns cdn.sharp @ns1.sharp.co.jp. ; <<>> DiG 9.16.1-Ubuntu <<>> -t ns cdn.sharp @ns1.sharp.co.jp. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33358 ;; flags: qr aa rd cd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: d8f2afc4c1a97f4ce396ac0e5fd9d124ade1d22bd9735b06 (good) ;; QUESTION SECTION: ;cdn.sharp. IN NS ;; AUTHORITY SECTION: sharp. 600 IN SOA ns1.sharp.co.jp. postmaster.sharp.co.jp. 2020121501 3600 1800 1209600 3600 ;; Query time: 15 msec ;; SERVER: 61.214.248.154#53(61.214.248.154) ;; WHEN: 水 12月 16 18:19:32 JST 2020 ;; MSG SIZE rcvd: 128