Go to www.nsiregistry.com and look on the right side. You can choose 'nameserver' instead of just domain name to get information on a registered NS. It can be a bit slow, but it works just fine.

You can find the hostname of any computer with a public IP address by passing the address to any Domain Name System (DNS) server. However, since the computers on a small business network have private ...

I'm having a little DNS problem. Some people can't connect to my web server. It appears that their DNS server is translating my domain name to an IP address I was using about 18 months ago.