IP-Info is a website where you can find out what your IP is as well as your user agent and information about your browser and OS. The site also has tools for looking up information about a particular IP and reverse DNS lookups. There is also a tool where you can check "is this site down" and numerous informative articles.
Die Seite gibt es auch auf Deutsch: Wie ist meine IP
Oops, looks like something broke here. This section is currently still in beta phase, so if you're noticing something strange please send us a message at firstname.lastname@example.org.
"We have been compromised but it's all OK." https://t.co/AaZ5mAHzOm