Dig is a DNS lookup utility provided by ISC. This page is a simple web interface for dig.
$ dig www.gt ; <<>> DiG 9.11.3-1ubuntu1.5-Ubuntu <<>> www.gt ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21423 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;www.gt. IN A ;; ANSWER SECTION: www.gt. 14399 IN A 217.70.190.203 ;; Query time: 73 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Thu Apr 25 13:42:57 UTC 2019 ;; MSG SIZE rcvd: 51