1. watchA
EDNSを受け付けないサーバー
2. whois
3. history
$ dig -t a dns0.heteml.jp @dns0.heteml.jp. +bufsize=4096 +qr ; <<>> DiG 9.11.3-1ubuntu1.12-Ubuntu <<>> -t a dns0.heteml.jp @dns0.heteml.jp. +bufsize=4096 +qr ;; global options: +cmd ;; Sending: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33780 ;; flags: rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;dns0.heteml.jp. IN A ;; QUERY SIZE: 43 ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33780 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;dns0.heteml.jp. IN A ;; ANSWER SECTION: dns0.heteml.jp. 3600 IN A 157.7.44.53 ;; AUTHORITY SECTION: heteml.jp. 259200 IN NS dns0.heteml.jp. heteml.jp. 259200 IN NS dns1.heteml.jp. ;; ADDITIONAL SECTION: dns1.heteml.jp. 3600 IN A 157.7.44.54 ;; Query time: 18 msec ;; SERVER: 157.7.44.53#53(157.7.44.53) ;; WHEN: Wed Oct 07 09:25:32 JST 2020 ;; MSG SIZE rcvd: 97