DNS/oarc.net/txt/8.8.8.8について、ここに記述してください。

$ dig rs.dns-oarc.net txt @8.8.8.8

; <<>> DiG 9.11.1 <<>> rs.dns-oarc.net txt @8.8.8.8
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41256
;; 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 "173.194.93.12 DNS reply size limit is at least 4090"
rst.x4064.x4058.x4090.rs.dns-oarc.net. 56 IN TXT "173.194.93.12 sent EDNS buffer size 4096"
rst.x4064.x4058.x4090.rs.dns-oarc.net. 56 IN TXT "Tested at 2017-07-14 07:06:55 UTC"

;; Query time: 1410 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fri Jul 14 16:06:55 JST 2017
;; MSG SIZE  rcvd: 279