Dig is a DNS lookup utility provided by ISC. This page is a simple web interface for dig.
$ dig 2001:41c9:3ff:ffff:e000:0:1f:fc01 PTR
; <<>> DiG 9.16.48-Ubuntu <<>> 2001:41c9:3ff:ffff:e000:0:1f:fc01 PTR
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 7404
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;2001:41c9:3ff:ffff:e000:0:1f:fc01. IN PTR
;; Query time: 0 msec
;; SERVER: 127.0.0.53#53(127.0.0.53)
;; WHEN: Wed Apr 24 08:01:21 UTC 2024
;; MSG SIZE rcvd: 62