shell:$ nslookup -timeout=2 -retry=1 'facebookflex.com' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: facebookflex.com Address: 57.144.222.141 Name: facebookflex.com Address: 2a03:2880:f36f:8d:face:b00c:0:2