ルートゾーンKSK/日本では/dns-oarc.net/8.8.8.8について、ここに記述してください。
$ dig -t txt rs.dns-oarc.net @8.8.8.8
; <<>> DiG 9.11.1 <<>> -t txt rs.dns-oarc.net @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1142 ;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; ANSWER SECTION: rs.dns-oarc.net. 7 IN CNAME rst.x1008.rs.dns-oarc.net. rst.x1008.rs.dns-oarc.net. 6 IN CNAME rst.x1968.x1008.rs.dns-oarc.net. rst.x1968.x1008.rs.dns-oarc.net. 5 IN CNAME rst.x2454.x1968.x1008.rs.dns-oarc.net. rst.x2454.x1968.x1008.rs.dns-oarc.net. 4 IN TXT "173.194.171.9 DNS reply size limit is at least 2454" rst.x2454.x1968.x1008.rs.dns-oarc.net. 4 IN TXT "173.194.171.9 sent EDNS buffer size 4096" rst.x2454.x1968.x1008.rs.dns-oarc.net. 4 IN TXT "Tested at 2017-07-26 11:38:30 UTC" ;; Query time: 41 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Wed Jul 26 20:39:22 JST 2017 ;; MSG SIZE rcvd: 279
$ dig -t txt rs.dns-oarc.net @8.8.8.8
; <<>> DiG 9.11.1 <<>> -t txt rs.dns-oarc.net @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23268 ;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;rs.dns-oarc.net. IN TXT ;; ANSWER SECTION: rs.dns-oarc.net. 59 IN CNAME rst.x4090.rs.dns-oarc.net. rst.x4090.rs.dns-oarc.net. 58 IN CNAME rst.x4058.x4090.rs.dns-oarc.net. rst.x4058.x4090.rs.dns-oarc.net. 57 IN CNAME rst.x4064.x4058.x4090.rs.dns-oarc.net. rst.x4064.x4058.x4090.rs.dns-oarc.net. 56 IN TXT "173.194.171.1 DNS reply size limit is at least 4090" rst.x4064.x4058.x4090.rs.dns-oarc.net. 56 IN TXT "173.194.171.1 sent EDNS buffer size 4096" rst.x4064.x4058.x4090.rs.dns-oarc.net. 56 IN TXT "Tested at 2017-07-26 11:40:46 UTC" ;; Query time: 1408 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Wed Jul 26 20:40:46 JST 2017 ;; MSG SIZE rcvd: 279