shell:$ nslookup -timeout=2 -retry=1 'edge-ig-dgw-shv-01-sea1.facebook.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	edge-ig-dgw-shv-01-sea1.facebook.com
Address: 157.240.3.142