Help having problems accesing various sites that require me to be a registered .gov domain. My IP is a registered as an .gov but my nameserver record has changed on my DNS configurartion(I don't know why) from something.gov to somethingelse.gov. Same IP, though.

When a reverse lookup is performed on the other end to verify my identity. Is it looking for the entire name or is it just verifying my IP addx is a .gov address?