shell:$ nslookup -timeout=2 -retry=1 'fwdproxy-prn-050.fbsv.net' Server: 1.1.1.1 Address: 1.1.1.1#53 Non-authoritative answer: Name: fwdproxy-prn-050.fbsv.net Address: 66.220.149.50 Name: fwdproxy-prn-050.fbsv.net Address: 2a03:2880:ff:32::face:b00c