shell:$ nslookup -timeout=2 -retry=1 'headers-regional.vvv.facebook.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	headers-regional.vvv.facebook.com
Address: 173.252.95.252
Name:	headers-regional.vvv.facebook.com
Address: 2a03:2880:21ff:fffe:face:b00c:0:1