1. watchA
共有メールサーバー
登録状況の確認
2. whois
$ dig brau.jp @ddns1.interlink.or.jp ; <<>> DiG 9.14.0 <<>> brau.jp @ddns1.interlink.or.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12527 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;brau.jp. IN A ;; ANSWER SECTION: brau.jp. 3600 IN A 203.141.136.47 ;; AUTHORITY SECTION: brau.jp. 3600 IN NS ddns1.interlink.or.jp. brau.jp. 3600 IN NS ddns2.interlink.or.jp. ;; Query time: 5 msec ;; SERVER: 203.141.128.39#53(203.141.128.39) ;; WHEN: 土 4月 13 07:39:53 JST 2019 ;; MSG SIZE rcvd: 105 47.136.141.203.in-addr.arpa. 86400 IN PTR mysv03.interlink.or.jp. MX なし。
$ dig www.brau.jp @gdns1.interlink.or.jp ; <<>> DiG 9.14.0 <<>> www.brau.jp @gdns1.interlink.or.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 43557 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.brau.jp. IN A ;; Query time: 5 msec ;; SERVER: 203.141.128.80#53(203.141.128.80) ;; WHEN: 土 4月 13 07:41:54 JST 2019 ;; MSG SIZE rcvd: 40