DNS/oarc.net/txt/OpenDNSについて、ここに記述してください。

$ dig rs.dns-oarc.net txt @208.67.222.222

; <<>> DiG 9.11.1 <<>> rs.dns-oarc.net txt @208.67.222.222
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50013
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;rs.dns-oarc.net.               IN      TXT

;; ANSWER SECTION:
rs.dns-oarc.net.        60      IN      CNAME   rst.x1384.rs.dns-oarc.net.
rst.x1384.rs.dns-oarc.net. 59   IN      CNAME   rst.x1394.x1384.rs.dns-oarc.net.
rst.x1394.x1384.rs.dns-oarc.net. 58 IN  CNAME   rst.x1353.x1394.x1384.rs.dns-oarc.net.
rst.x1353.x1394.x1384.rs.dns-oarc.net. 57 IN TXT "2620:0:cca::67 DNS reply size limit is at least 1394"
rst.x1353.x1394.x1384.rs.dns-oarc.net. 57 IN TXT "2620:0:cca::67 sent EDNS buffer size 1410"
rst.x1353.x1394.x1384.rs.dns-oarc.net. 57 IN TXT "Tested at 2017-07-15 06:51:39 UTC"

;; Query time: 1466 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Sat Jul 15 15:51:39 JST 2017
;; MSG SIZE  rcvd: 281