NSがないゾーン
1. whois
[Domain Name] 1BOOKS.JP [Registrant] Tamotsu Nihonyanagi [Name Server] ns1.value-domain.com [Name Server] ns2.value-domain.com [Name Server] ns3.value-domain.com [Name Server] ns4.value-domain.com [Name Server] ns5.value-domain.com [Signing Key] [Created on] 2015/06/17 [Expires on] 2023/06/30 [Status] Active [Last Updated] 2022/07/01 01:05:08 (JST)
2. history
$ dig -t ns 1books.jp @ns1.value-domain.com ; <<>> DiG 9.18.1-1ubuntu1.2-Ubuntu <<>> -t ns 1books.jp @ns1.value-domain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16919 ;; 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: 1680 ;; QUESTION SECTION: ;1books.jp. IN NS ;; ANSWER SECTION: 1books.jp. 1200 IN CNAME hatenablog.com. ;; Query time: 7 msec ;; SERVER: 54.65.150.1#53(ns1.value-domain.com) (UDP) ;; WHEN: Mon Oct 31 23:19:53 JST 2022 ;; MSG SIZE rcvd: 66