shell:$ nslookup -timeout=2 -retry=1 'ool-44c1b2b0.dyn.optonline.net' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: ool-44c1b2b0.dyn.optonline.net Address: 68.193.178.176