1. watchA
2. whois
3. history
$ dig -t ns census.gov @a.gov-servers.net ; <<>> DiG 9.16.1-Ubuntu <<>> -t ns census.gov @a.gov-servers.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4264 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 10, ADDITIONAL: 9 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;census.gov. IN NS ;; AUTHORITY SECTION: census.gov. 86400 IN NS ns-b1e.census.gov. census.gov. 86400 IN NS ns-a1e.census.gov. census.gov. 86400 IN NS a1-22.akam.net. census.gov. 86400 IN NS a10-65.akam.net. census.gov. 86400 IN NS a16-67.akam.net. census.gov. 86400 IN NS ns-b2e.census.gov. census.gov. 86400 IN NS a3-65.akam.net. census.gov. 86400 IN NS ns-a2e.census.gov. census.gov. 86400 IN NS a28-64.akam.net. census.gov. 86400 IN NS a11-66.akam.net. ;; ADDITIONAL SECTION: ns-b1e.census.gov. 86400 IN A 148.129.32.22 ns-b1e.census.gov. 86400 IN AAAA 2610:20:2101:16::16:0 ns-a1e.census.gov. 86400 IN A 148.129.33.22 ns-a1e.census.gov. 86400 IN AAAA 2610:20:2111:16::16:0 ns-b2e.census.gov. 86400 IN A 148.129.32.23 ns-b2e.census.gov. 86400 IN AAAA 2610:20:2101:16::17:0 ns-a2e.census.gov. 86400 IN A 148.129.33.23 ns-a2e.census.gov. 86400 IN AAAA 2610:20:2111:16::17:0 ;; Query time: 119 msec ;; SERVER: 69.36.157.30#53(69.36.157.30) ;; WHEN: 水 10月 21 07:51:24 JST 2020 ;; MSG SIZE rcvd: 431