shell:$ nslookup -timeout=2 -retry=1 'readthedocs-hosted.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	readthedocs-hosted.com
Address: 52.43.9.250
Name:	readthedocs-hosted.com
Address: 52.89.106.67
Name:	readthedocs-hosted.com
Address: 54.203.138.154