shell:$ nslookup -timeout=2 -retry=1 'opensource.fb.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	opensource.fb.com
Address: 143.204.160.100
Name:	opensource.fb.com
Address: 2600:9000:20ef:ca00:1f:2d3:8440:93a1