shell:$ nslookup -timeout=2 -retry=1 'edge-dgw-shv-01-lhr6.facebook.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	edge-dgw-shv-01-lhr6.facebook.com
Address: 57.144.238.145