1. whois
excitemedia.com.au. 900 IN NS ns2.conetix.com. excitemedia.com.au. 900 IN NS ns1.conetix.com.
2. history
$ dig -t ns excitemedia.com.au @ns2.conetix.com. ;; communications error to 121.52.199.5#53: timed out ;; communications error to 121.52.199.5#53: timed out ;; communications error to 121.52.199.5#53: timed out $ dig -t ns excitemedia.com.au @ns2.conetix.com. ; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t ns excitemedia.com.au @ns2.conetix.com. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42693 ;; 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: 1232 ;; QUESTION SECTION: ;excitemedia.com.au. IN NS ;; ANSWER SECTION: excitemedia.com.au. 600 IN NS ns2.conetix.com. excitemedia.com.au. 600 IN NS ns1.conetix.com.
;; Query time: 168 msec ;; SERVER: 121.52.199.5#53(ns2.conetix.com.) (UDP) ;; WHEN: Tue May 09 16:15:08 JST 2023 ;; MSG SIZE rcvd: 94
この返答はおかしい。NXDOMAIN 返答はないだろう。-- ToshinoriMaeno 2023-05-09 07:19:35
$ dig -t a excitemedia.com.au @ns2.conetix.com. ; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t a excitemedia.com.au @ns2.conetix.com. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 63261 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ;; QUESTION SECTION: ;excitemedia.com.au. IN A ;; Query time: 160 msec ;; SERVER: 121.52.199.5#53(ns2.conetix.com.) (UDP) ;; WHEN: Tue May 09 16:17:00 JST 2023 ;; MSG SIZE rcvd: 47