Reverse DNS Lookup
This tool will provide you the hostname (ie www.yahoo.com) of the IP address that you enter below.
Results:
Lookup on IPv4 Address: 131.130.249.233
Hostname: domainliste.nic.at
Hostname: www.nic.at
Hostname: ws-stg.nic.at
Hostname: www-stage.nic.at
Hostname: nic.at