1. watchA
2. whois
3. history
$ dig -t soa st.keio.ac.jp @ns0.sfc.keio.ac.jp
; <<>> DiG 9.11.3-1ubuntu1.11-Ubuntu <<>> -t soa st.keio.ac.jp @ns0.sfc.keio.ac.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28197
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 11
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 6a211afdb27da60f7e5d7f115ef3e832675d504d874bd162 (good)
;; QUESTION SECTION:
;st.keio.ac.jp. IN SOA
;; ANSWER SECTION:
st.keio.ac.jp. 3600 IN SOA nsm0.keio.ac.jp. postmaster.keio.ac.jp. 2020052900 3600 900 604800 3600
;; AUTHORITY SECTION:
st.keio.ac.jp. 3600 IN NS ns.st.keio.ac.jp.
st.keio.ac.jp. 3600 IN NS ns.mita.keio.ac.jp.
st.keio.ac.jp. 3600 IN NS kogwy.cc.keio.ac.jp.
st.keio.ac.jp. 3600 IN NS ns0.sfc.keio.ac.jp.
st.keio.ac.jp. 3600 IN NS ns.sc.keio.ac.jp.
st.keio.ac.jp. 3600 IN NS ns.hc.keio.ac.jp.
;; ADDITIONAL SECTION:
ns.hc.keio.ac.jp. 86400 IN A 131.113.224.8
ns.st.keio.ac.jp. 3600 IN A 131.113.1.8
ns.mita.keio.ac.jp. 86400 IN A 131.113.192.8
ns0.sfc.keio.ac.jp. 3600 IN A 133.27.4.121
kogwy.cc.keio.ac.jp. 3600 IN A 131.113.1.1
ns.hc.keio.ac.jp. 86400 IN AAAA 2001:df0:eb:4259::8
ns.st.keio.ac.jp. 3600 IN AAAA 2001:df0:eb:8001::8
ns.mita.keio.ac.jp. 86400 IN AAAA 2001:df0:eb:2106::8
ns0.sfc.keio.ac.jp. 3600 IN AAAA 2001:df2:c900:1100::4:121
kogwy.cc.keio.ac.jp. 3600 IN AAAA 2001:df0:eb:8001::1
;; Query time: 21 msec
;; SERVER: 133.27.4.121#53(133.27.4.121)
;; WHEN: Thu Jun 25 08:56:34 JST 2020
;; MSG SIZE rcvd: 466
4. こんな返事も
$ dig -t soa st.keio.ac.jp @kogwy.cc.keio.ac.jp.
$ dig -t soa sfc.keio.ac.jp @ns0.sfc.keio.ac.jp
; <<>> DiG 9.11.3-1ubuntu1.11-Ubuntu <<>> -t soa sfc.keio.ac.jp @ns0.sfc.keio.ac.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36402
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 7
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: b6118324b15abc7d309b0dc65ef3e8f52bd48ffc937d12a2 (good)
;; QUESTION SECTION:
;sfc.keio.ac.jp. IN SOA
;; ANSWER SECTION:
sfc.keio.ac.jp. 3600 IN SOA ns0.sfc.keio.ac.jp. kusumoto.sfc.keio.ac.jp. 10010634 7200 3600 604800 1800
;; AUTHORITY SECTION:
sfc.keio.ac.jp. 3600 IN NS ns02.sfc.keio.ac.jp.
sfc.keio.ac.jp. 3600 IN NS ns01.sfc.keio.ac.jp.
sfc.keio.ac.jp. 3600 IN NS kogwy.cc.keio.ac.jp.
sfc.keio.ac.jp. 3600 IN NS ns0.sfc.keio.ac.jp.
;; ADDITIONAL SECTION:
ns0.sfc.keio.ac.jp. 3600 IN A 133.27.4.121
ns01.sfc.keio.ac.jp. 3600 IN A 133.27.4.21
ns02.sfc.keio.ac.jp. 3600 IN A 133.27.4.22
kogwy.cc.keio.ac.jp. 3600 IN A 131.113.1.1
ns0.sfc.keio.ac.jp. 3600 IN AAAA 2001:df2:c900:1100::4:121
kogwy.cc.keio.ac.jp. 3600 IN AAAA 2001:df0:eb:8001::1
;; Query time: 20 msec
;; SERVER: 133.27.4.121#53(133.27.4.121)
;; WHEN: Thu Jun 25 08:59:49 JST 2020
;; MSG SIZE rcvd: 315
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