The site Gaijin.at is funded by advertising.
By allowing advertising on the domain Gaijin.at you are helping to continue to offer free programs, scripts and online tools.
This online tool determine the IP address to an domain name and vice versa. If available, the alias IP addresses will be displayed too.
Additionally, the DNS records of a domain can be determined. And you can determine, if the IP address is probably a Tor exit-node.