shell:$ nslookup -timeout=2 -retry=1 'whispersystems.org'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	whispersystems.org
Address: 104.18.14.197
Name:	whispersystems.org
Address: 104.18.15.197
Name:	whispersystems.org
Address: 2606:4700::6812:ec5
Name:	whispersystems.org
Address: 2606:4700::6812:fc5