awsdns lame delegation
https://twitter.com/beyondDNS/status/1619570318280097792?s=20&t=_Whwq8KXXX-O0EKnOTZDFA
1. whois
dns1.tokyo. 86400 IN NS c.ns.qmail.jp. dns1.tokyo. 86400 IN NS kurt.ns.cloudflare.com. dns1.tokyo. 86400 IN NS ns-394.awsdns-49.com. dns1.tokyo. 86400 IN NS ns-1608.awsdns-09.co.uk. dns1.tokyo. 86400 IN NS ns-1204.awsdns-22.org. dns1.tokyo. 86400 IN NS ns-303.awsdns-37.com. dns1.tokyo. 86400 IN NS ns-837.awsdns-40.net.
2. history
tmaeno@tokyo:~/tokyo$ dig -t ns dns1.tokyo @c.ns.qmail.jp ; <<>> DiG 9.18.1-1ubuntu1.3-Ubuntu <<>> -t ns dns1.tokyo @c.ns.qmail.jp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10991 ;; flags: qr aa rd; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;dns1.tokyo. IN NS ;; ANSWER SECTION: dns1.tokyo. 3600 IN NS a.ns.dns1.tokyo. dns1.tokyo. 600 IN NS c.ns.qmail.jp. dns1.tokyo. 600 IN CNAME moin.dns1.tokyo. ;; Query time: 0 msec ;; SERVER: 160.16.114.69#53(c.ns.qmail.jp) (UDP) ;; WHEN: Mon Jan 30 19:28:01 JST 2023 ;; MSG SIZE rcvd: 93