foon@sweetie:~$ nslookup fcc.gov 75.75.75.75
Server:     75.75.75.75
Address:    75.75.75.75#53

** server can't find fcc.gov: NXDOMAIN

foon@sweetie:~$ nslookup whitehouse.gov 75.75.75.75
Server:     75.75.75.75
Address:    75.75.75.75#53

Non-authoritative answer:
Name:   whitehouse.gov
Address: 69.192.218.135

foon@sweetie:~$ nslookup fcc.gov 75.75.76.76
Server:     75.75.76.76
Address:    75.75.76.76#53

** server can't find fcc.gov: NXDOMAIN

foon@sweetie:~$ nslookup whitehouse.gov 75.75.76.76
Server:     75.75.76.76
Address:    75.75.76.76#53

Non-authoritative answer:
Name:   whitehouse.gov
Address: 118.215.58.135

foon@sweetie:~$