Dig Domains
; <<>> DiG Dig.Domains <<>> any 39.66.in-addr.arpa
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65475
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;39.66.in-addr.arpa.	IN ANY

;; AUTHORITY SECTION:
66.in-addr.arpa.	1800 IN	SOA z.arin.net. dns-ops.arin.net. (
				2017034001 ; serial
				1800       ; refresh (30 minutes)
				900        ; retry (15 minutes)
				691200     ; expire (1 week 1 day)
				10800      ; minimum (3 hours)
				)

;; Query time: 41 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Jun 27 20:49:10 UTC 2022
;; MSG SIZE  rcvd: 101