jp.sharp ドメインの権威サーバーのはずが、．．．
1. whois
$ dig eans11.jp.sharp @eans11.jp.sharp. ; <<>> DiG 9.18.28-0ubuntu0.24.04.1-Ubuntu <<>> eans11.jp.sharp @eans11.jp.sharp. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47570 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 5 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: 8b59530934d8cd4ce4f295fa6726e6bfa0e4ad2f63d52337 (good) ;; QUESTION SECTION: ;eans11.jp.sharp. IN A ;; ANSWER SECTION: eans11.jp.sharp. 600 IN A 210.163.47.3 ;; AUTHORITY SECTION: sharp. 600 IN NS tg1.sharp.co.jp. sharp. 600 IN NS eans11.jp.sharp. sharp. 600 IN NS wens12.jp.sharp. sharp. 600 IN NS ns1.sharp.co.jp. sharp. 600 IN NS wens11.jp.sharp. ;; ADDITIONAL SECTION: ns1.sharp.co.jp. 43200 IN A 61.214.248.154 tg1.sharp.co.jp. 600 IN A 61.214.248.155 wens11.jp.sharp. 600 IN A 61.214.248.154 wens12.jp.sharp. 600 IN A 61.214.248.155 ;; Query time: 12 msec ;; SERVER: 210.163.47.3#53(eans11.jp.sharp.) (UDP) ;; WHEN: Sun Nov 03 11:58:07 JST 2024 ;; MSG SIZE rcvd: 255