DNSSEC/gov.acについて、ここに記述してください。

DSあり。 (省略)

$ dnsq ns ac a.root-servers.net
2 ac:
368 bytes, 1+0+6+11 records, response, noerror
query: 2 ac
authority: ac 172800 NS c0.nic.ac
authority: ac 172800 NS a0.nic.ac
authority: ac 172800 NS b0.nic.ac
authority: ac 172800 NS a2.nic.ac
authority: ac 172800 NS ns-a1.ac
authority: ac 172800 NS ns-a3.ac

$ dig +dnssec -t ns ac @a0.nic.ac

; <<>> DiG 9.11.2 <<>> +dnssec -t ns ac @a0.nic.ac
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36243
;; flags: qr aa rd; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 15
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;ac.                            IN      NS

;; ANSWER SECTION:
ac.                     86400   IN      NS      b0.nic.ac.
ac.                     86400   IN      NS      ns-a3.ac.
ac.                     86400   IN      NS      c0.nic.ac.
ac.                     86400   IN      NS      ns-a1.ac.
ac.                     86400   IN      NS      a2.nic.ac.
ac.                     86400   IN      NS      a0.nic.ac.
ac.                     86400   IN      RRSIG   NS 8 1 86400 20180207211512 20180117201512 47590 ac. JU8h5b1BvnpZCkPfknGdGD38UhYG7PBeD3+oXCEmodR+D6nrntHSSAlB 32aBF7zi2l/+KeBcZevHKAopKLk2dHnVHdm4d3EMDzyqYOoXiz6LrSf7 50cdmnv07u9d4oFAfIoznVpwBHPjHXvQI725++7sy6N1EPld+78LuDg0 ftQ=

;; ADDITIONAL SECTION:
a0.nic.ac.              300     IN      A       65.22.160.1
a2.nic.ac.              300     IN      A       65.22.163.1
b0.nic.ac.              300     IN      A       65.22.161.1
c0.nic.ac.              300     IN      A       65.22.162.1
ns-a1.ac.               86400   IN      A       194.0.1.1
ns-a3.ac.               86400   IN      A       74.116.178.1
a0.nic.ac.              300     IN      AAAA    2a01:8840:9e::1
a2.nic.ac.              300     IN      AAAA    2a01:8840:a1::1
b0.nic.ac.              300     IN      AAAA    2a01:8840:9f::1
c0.nic.ac.              300     IN      AAAA    2a01:8840:a0::1
ns-a1.ac.               86400   IN      AAAA    2001:678:4::1
ns-a1.ac.               86400   IN      RRSIG   A 8 2 86400 20180207211512 20180117201512 47590 ac. c5xp/MrNvorZ+LgocrKQula6MM2lxnowtBnsdarHKHXWjxMPEO+lZWDv n7TxGIIqHNfoJuoRYlXKoIlq9O3sjUPW+aCYQ9aF6jrnilMDn4geRd7S 73W+ZLPO/82dNaAzq+2zXf7dWeIBnv6giILTRhAIdavn5N4KEvTLpt2B HqM=
ns-a1.ac.               86400   IN      RRSIG   AAAA 8 2 86400 20180207211512 20180117201512 47590 ac. OBYrZCsSDpAK66q51S8Zk4j1IAZlqMzpUPM1ExQd/VlqSjZWIHLB+VO6 Vllb+yecP1MnDqBNyTVx6HWk5S/yACAVMU5YdCUdUkz0+rq/LNciAcrN wbYHy4H/GOfmPLR5du+k23o4Frn1TAO1SaD8Lc6dv2mnabrFGEgyS73B OfI=
ns-a3.ac.               86400   IN      RRSIG   A 8 2 86400 20180207211512 20180117201512 47590 ac. GWG6cFEOnBH3bANKhdk1rUjZJjfbWAbEPwFJ9XrMdvi6fHBDNcWlzYQK 9+4W6/m3LrIaFcSCS+LUQHCBeXmniximVjFMv7KgYpfiIA+QYtw701zA Gq5FbWSMWxM9MH4jxC7btqCg/PWRLTfqlhFIdcTalQk69Kusjwm3OSaY ToE=

;; Query time: 169 msec
;; SERVER: 65.22.160.1#53(65.22.160.1)
;; WHEN: Thu Jan 18 20:57:34 JST 2018
;; MSG SIZE  rcvd: 1027

$ dig +dnssec -t ns nic.ac @ns-a1.ac

; <<>> DiG 9.11.2 <<>> +dnssec -t ns nic.ac @ns-a1.ac
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 450
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 8, ADDITIONAL: 9
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;nic.ac.                                IN      NS

;; AUTHORITY SECTION:
nic.ac.                 86400   IN      NS      a0.nic.ac.
nic.ac.                 86400   IN      NS      a2.nic.ac.
nic.ac.                 86400   IN      NS      b0.nic.ac.
nic.ac.                 86400   IN      NS      c0.nic.ac.
psdmd2tob59cu5phsqmpvkndffq25pgt.ac. 900 IN NSEC3 1 1 1 D399EAAB Q1HNPEF2REI2EH77GTNLDDRDLOQH9HT6  NS SOA RRSIG DNSKEY NSEC3PARAM
psdmd2tob59cu5phsqmpvkndffq25pgt.ac. 900 IN RRSIG NSEC3 8 2 900 20180208113049 20180118103049 47590 ac. Aye+lEcyZRW3G0BUMB5F+Q2H99Ps5GFiDofdqJpbcz7i8I5Mv7Kt35VC 2NAHHcjiNDBFpztaBcmgBC3RXcUjpYktqGNR9oDUzflxnMdCe/2v5QMS M+5r75A6IIJcfyoG5+XDAbgz/x5I/2zy1ijP1HndR2CYeGOcQroMdwG7 hJc=
8h2829l1ovq30jmidmms6lvvb8psluvh.ac. 900 IN NSEC3 1 1 1 D399EAAB BKG2FHV4KDT3LKRLJ1D7TQOBV41NOF4T  NS DS RRSIG
8h2829l1ovq30jmidmms6lvvb8psluvh.ac. 900 IN RRSIG NSEC3 8 2 900 20180207211512 20180117201512 47590 ac. B26ay35sGRB2FxR+NnBeSLPVDh7UjSUvgg195H536kAsyWG6EUSt9VRa wH9hNtLXEBU1Ycb0xYu4wNHc8x7JJ3W5c1wRLjqEKs6CIieVI4tvKd6u AXeTSxsGXa9EM9cgTrvCMpiTEaTf4LWpvZfdxqqnhuW79Celv9iQOps6 fFw=

;; ADDITIONAL SECTION:
c0.nic.ac.              86400   IN      A       65.22.162.1
c0.nic.ac.              86400   IN      AAAA    2a01:8840:a0::1
a0.nic.ac.              86400   IN      A       65.22.160.1
a0.nic.ac.              86400   IN      AAAA    2a01:8840:9e::1
b0.nic.ac.              86400   IN      A       65.22.161.1
b0.nic.ac.              86400   IN      AAAA    2a01:8840:9f::1
a2.nic.ac.              86400   IN      A       65.22.163.1
a2.nic.ac.              86400   IN      AAAA    2a01:8840:a1::1

;; Query time: 6 msec
;; SERVER: 194.0.1.1#53(194.0.1.1)
;; WHEN: Thu Jan 18 21:00:02 JST 2018
;; MSG SIZE  rcvd: 798

1. DNSSEC情報なし

$ dig +dnssec -t ns nic.ac @c0.nic.ac

; <<>> DiG 9.11.2 <<>> +dnssec -t ns nic.ac @c0.nic.ac
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28189
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 9
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;nic.ac.                                IN      NS

;; ANSWER SECTION:
nic.ac.                 300     IN      NS      b0.nic.ac.
nic.ac.                 300     IN      NS      c0.nic.ac.
nic.ac.                 300     IN      NS      a2.nic.ac.
nic.ac.                 300     IN      NS      a0.nic.ac.

;; ADDITIONAL SECTION:
a0.nic.ac.              300     IN      A       65.22.160.1
a2.nic.ac.              300     IN      A       65.22.163.1
b0.nic.ac.              300     IN      A       65.22.161.1
c0.nic.ac.              300     IN      A       65.22.162.1
a0.nic.ac.              300     IN      AAAA    2a01:8840:9e::1
a2.nic.ac.              300     IN      AAAA    2a01:8840:a1::1
b0.nic.ac.              300     IN      AAAA    2a01:8840:9f::1
c0.nic.ac.              300     IN      AAAA    2a01:8840:a0::1

;; Query time: 168 msec
;; SERVER: 65.22.162.1#53(65.22.162.1)
;; WHEN: Thu Jan 18 21:02:13 JST 2018
;; MSG SIZE  rcvd: 279

$ dig -t a gov.ac +dnssec +nocd @127.0.0.1

; <<>> DiG 9.11.2 <<>> -t a gov.ac +dnssec +nocd @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 39477
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 8, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;gov.ac.                                IN      A

;; AUTHORITY SECTION:
ac.                     479     IN      SOA     a0.nic.ac. noc.afilias-nst.info. 1497206787 10800 3600 2764800 900
ac.                     479     IN      RRSIG   SOA 8 1 86400 20180208113049 20180118103049 47590 ac. PL/4yZXAY3S14XWIstL2PWsdk7O3DjXvX7gh+sjoKzn+/Pq6djgHHaIY IfGbvIbSVJdePlKzy/qsV942qPP51yN2KH7Nz9DuW0XKuY/fRxQNXyi7 xrb0/Q17DwGS9XMVQxsabRQVndJqdv+cRKOhk5oeOQU3BXLm1yaC2wu+ ZG4=
0hgbikcb2fqiu4jrrj2veqs07bgsj5ua.ac. 479 IN RRSIG NSEC3 8 2 900 20180208001919 20180117231919 47590 ac. QEzfxnSETbhJi4Ahp9vVe/LcikMaCRCKNd0eEGKXiRUIEbI0TYGBr7q/ U/PxrWVUfr/MFHVCfMNjn4QbbO9/TebehJDRRuKlHkjiydVxDk50cTLq EkUranKt9hvCog+84y3be/Oq8nkxSsxvN6jJkjQ+XI0ZKjdXEnJG2xcU t3M=
0hgbikcb2fqiu4jrrj2veqs07bgsj5ua.ac. 479 IN NSEC3 1 1 1 D399EAAB 0VRQ99T0JHERJC9279H8TFCDBP5KG21H  A RRSIG
nhqkep5taetplji3190minnm7uoohc83.ac. 479 IN RRSIG NSEC3 8 2 900 20180207211512 20180117201512 47590 ac. REx0bAu7H7qT8s7fInhXLkN6U1gv3rDPF+vSbnp+C1P0rrxT3tWtm2Az M0UejEdhU6ckii2vONLd6pTHbhNuisLoBLP9wd4v0S5nBonhV7+mZWdI jUpDqzzvoGGM97DUsSlT7XCPG9DgOOYBgo5imBM8ZCwWjA5otHTar5D1 sYE=
nhqkep5taetplji3190minnm7uoohc83.ac. 479 IN NSEC3 1 1 1 D399EAAB OFA8R107HBRHHSNN7RJI73T5K41MT3FH  NS DS RRSIG
psdmd2tob59cu5phsqmpvkndffq25pgt.ac. 479 IN RRSIG NSEC3 8 2 900 20180208113049 20180118103049 47590 ac. Aye+lEcyZRW3G0BUMB5F+Q2H99Ps5GFiDofdqJpbcz7i8I5Mv7Kt35VC 2NAHHcjiNDBFpztaBcmgBC3RXcUjpYktqGNR9oDUzflxnMdCe/2v5QMS M+5r75A6IIJcfyoG5+XDAbgz/x5I/2zy1ijP1HndR2CYeGOcQroMdwG7 hJc=
psdmd2tob59cu5phsqmpvkndffq25pgt.ac. 479 IN NSEC3 1 1 1 D399EAAB Q1HNPEF2REI2EH77GTNLDDRDLOQH9HT6  NS SOA RRSIG DNSKEY NSEC3PARAM

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Jan 18 20:55:04 JST 2018
;; MSG SIZE  rcvd: 996

2. ???

$ dig +dnssec ns ac @a2.nic.ac

; <<>> DiG 9.11.2 <<>> +dnssec ns ac @a2.nic.ac
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 253
;; flags: qr aa rd; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 7
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;ac.                            IN      NS

;; ANSWER SECTION:
ac.                     86400   IN      NS      a0.nic.ac.
ac.                     86400   IN      NS      c0.nic.ac.
ac.                     86400   IN      NS      ns-a1.ac.
ac.                     86400   IN      NS      b0.nic.ac.
ac.                     86400   IN      NS      a2.nic.ac.
ac.                     86400   IN      NS      ns-a3.ac.
ac.                     86400   IN      RRSIG   NS 8 1 86400 20180207211512 20180117201512 47590 ac. JU8h5b1BvnpZCkPfknGdGD38UhYG7PBeD3+oXCEmodR+D6nrntHSSAlB 32aBF7zi2l/+KeBcZevHKAopKLk2dHnVHdm4d3EMDzyqYOoXiz6LrSf7 50cdmnv07u9d4oFAfIoznVpwBHPjHXvQI725++7sy6N1EPld+78LuDg0 ftQ=

;; ADDITIONAL SECTION:
ns-a1.ac.               86400   IN      A       194.0.1.1
ns-a3.ac.               86400   IN      A       74.116.178.1
ns-a1.ac.               86400   IN      AAAA    2001:678:4::1
ns-a1.ac.               86400   IN      RRSIG   A 8 2 86400 20180207211512 20180117201512 47590 ac. c5xp/MrNvorZ+LgocrKQula6MM2lxnowtBnsdarHKHXWjxMPEO+lZWDv n7TxGIIqHNfoJuoRYlXKoIlq9O3sjUPW+aCYQ9aF6jrnilMDn4geRd7S 73W+ZLPO/82dNaAzq+2zXf7dWeIBnv6giILTRhAIdavn5N4KEvTLpt2B HqM=
ns-a1.ac.               86400   IN      RRSIG   AAAA 8 2 86400 20180207211512 20180117201512 47590 ac. OBYrZCsSDpAK66q51S8Zk4j1IAZlqMzpUPM1ExQd/VlqSjZWIHLB+VO6 Vllb+yecP1MnDqBNyTVx6HWk5S/yACAVMU5YdCUdUkz0+rq/LNciAcrN wbYHy4H/GOfmPLR5du+k23o4Frn1TAO1SaD8Lc6dv2mnabrFGEgyS73B OfI=
ns-a3.ac.               86400   IN      RRSIG   A 8 2 86400 20180207211512 20180117201512 47590 ac. GWG6cFEOnBH3bANKhdk1rUjZJjfbWAbEPwFJ9XrMdvi6fHBDNcWlzYQK 9+4W6/m3LrIaFcSCS+LUQHCBeXmniximVjFMv7KgYpfiIA+QYtw701zA Gq5FbWSMWxM9MH4jxC7btqCg/PWRLTfqlhFIdcTalQk69Kusjwm3OSaY ToE=

;; Query time: 84 msec
;; SERVER: 65.22.163.1#53(65.22.163.1)
;; WHEN: Thu Jan 18 21:31:57 JST 2018
;; MSG SIZE  rcvd: 851