The WHOIS info for any domain or IP address informs you about the person or company that registered it and offers some kind of contact information. This info is public and accessible to anyone, although it can be complicated to get without having some computer skills. Using WhoDat, though, it's not necessary to do anything but open the app and type in the domain or IP address you want to track and you'll get its information automatically. You can select and copy the text you want, and you can also save it all as a text file. In addition, since this is a portable application, you don't need to install it. You just have to open it from a pen drive and it will be ready use.
