https://dnschecker.org/#A/www.pref.osaka.lg.jp
1. whois
a. [ドメイン名] PREF.OSAKA.LG.JP e. [そしきめい] おおさかふ f. [組織名] 大阪府 g. [Organization] Osaka Prefectural Government k. [組織種別] 地方公共団体 l. [Organization Type] Local Government m. [登録担当者] PC1005760JP n. [技術連絡担当者] PC1005759JP p. [ネームサーバ] ns1.utility.k-opti.com p. [ネームサーバ] ns2.utility.k-opti.com s. [署名鍵] [状態] Registered (2024/03/31) [登録年月日] 2004/03/04 [接続年月日] [最終更新] 2023/04/01 00:10:05 (JST) www.pref.osaka.lg.jp. 3405 IN CNAME www.pref.osaka.lg.jp.edgekey.net. www.pref.osaka.lg.jp.edgekey.net. 4862 IN CNAME e90504.dscb.akamaiedge.net.
2. history
$ dig www.pref.osaka.lg.jp @ns1.utility.k-opti.com ;; communications error to 59.190.153.132#53: timed out ;; communications error to 59.190.153.132#53: timed out ;; communications error to 59.190.153.132#53: timed out ; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> www.pref.osaka.lg.jp @ns1.utility.k-opti.com ;; global options: +cmd ;; no servers could be reached
$ dig www.pref.osaka.lg.jp @9.9.9.9 ; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> www.pref.osaka.lg.jp @9.9.9.9 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 4263
3. NS
$ dig -t ns pref.osaka.lg.jp @ns1.utility.k-opti.com ; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t ns pref.osaka.lg.jp @ns1.utility.k-opti.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14955 ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: 6f81afead20f9fd3858d5c65647e45c986b9dd91dca7ed84 (good) ;; QUESTION SECTION: ;pref.osaka.lg.jp. IN NS ;; ANSWER SECTION: pref.osaka.lg.jp. 3600 IN NS ns1.utility.optage.co.jp. pref.osaka.lg.jp. 3600 IN NS ns2.utility.optage.co.jp. ;; Query time: 11 msec ;; SERVER: 59.190.153.132#53(ns1.utility.k-opti.com) (UDP) ;; WHEN: Tue Jun 06 05:30:01 JST 2023 ;; MSG SIZE rcvd: 127