watchNS/ns.nic.czについて、ここに記述してください。

ENT (毒入れできるらしい。) 

%dnsq ns ns.nic.cz a.ns.nic.cz                                 ~/dnsq/0110
2 ns.nic.cz:
76 bytes, 1+0+1+0 records, response, authoritative, noerror
query: 2 ns.nic.cz
authority: nic.cz 1800 SOA a.ns.nic.cz hostmaster.nic.cz 1515591602 10800 3600 1209600 7200

%dig +dnssec -t ns ns.nic.cz @a.ns.nic.cz                      ~/dnsq/0110

; <<>> DiG 9.11.2 <<>> +dnssec -t ns ns.nic.cz @a.ns.nic.cz
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49028
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 4, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 1232
;; QUESTION SECTION:
;ns.nic.cz.                     IN      NS

;; AUTHORITY SECTION:
nic.cz.                 1800    IN      SOA     a.ns.nic.cz. hostmaster.nic.cz. 1515591602 10800 3600 1209600 7200
ifjkdqt48t7p5absn2infr05eamj1utj.nic.cz. 7200 IN NSEC3 1 0 10 CE2E5556ED9EF517 IG6AVKGH117P1DAST2B648B3T2OBGL2B 
nic.cz.                 1800    IN      RRSIG   SOA 13 2 1800 20180124121339 20180110124002 43859 nic.cz. l4g/0pC9EgAc9W3quZv40PrfklULFAkJsRIK0z0Hb3k3+QNCqe+SPrrK bm57DjWw8ltPImd8NXPcb2iEh5yrug==
ifjkdqt48t7p5absn2infr05eamj1utj.nic.cz. 7200 IN RRSIG NSEC3 13 3 7200 20180123222407 20180110124002 43859 nic.cz. cR4vh+CZsYiJsaQ03vMdIqpPhGoVMmhs2VKTq3oVVZRZxN17w00wQuyO oBu2pSaWtQ9BPdqo7k6j8PNoYVl4vg==

;; Query time: 262 msec
;; SERVER: 194.0.12.1#53(194.0.12.1)
;; WHEN: Thu Jan 11 00:57:31 JST 2018
;; MSG SIZE  rcvd: 370