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: 185.125.25.4
Hostname: sms.infomaniak.ch
Hostname: reverse-proxy-ip-4.infomaniak.ch
Hostname: import-email.infomaniak.ch
Hostname: contacts.infomaniak.ch
Hostname: calendar.infomaniak.ch
Hostname: config.infomaniak.ch