1. 1.1.1.1
knot-resolver 派生のリゾルバーであるとのこと。
$ dig -t ns odns.info @1.1.1.1
; <<>> DiG 9.18.1-1ubuntu1.2-Ubuntu <<>> -t ns odns.info @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41996
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; NSID: 33 38 32 6d 33 36 ("382m36")
;; QUESTION SECTION:
;odns.info. IN NS
;; ANSWER SECTION:
odns.info. 86400 IN CNAME moin.odns.info.
;; AUTHORITY SECTION:
odns.info. 2560 IN SOA a.ns.odns.info. hostmaster.odns.info. 1666842611 16384 2048 1048576 2560
;; Query time: 136 msec
;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)
;; WHEN: Thu Oct 27 13:36:29 JST 2022
;; MSG SIZE rcvd: 119