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: 134.102.245.247
Hostname: mpa.iwt.uni-bremen.de
Hostname: mtm.iwt.uni-bremen.de
Hostname: www.lfm.uni-bremen.de
Hostname: lutetium.iwt.uni-bremen.de
Hostname: autodiscover.iwt.uni-bremen.de