Domain Registration Lookup information – on information such as who it is registered to and other details needs a Whois tool. Every network professional do know this one!

Now, all around the world there are so many REGISTRARS and you need different servers
to find the information. First of all that could take some time;

So here is a tip;

www.allwhois.com -> This is a site, you can check the information regardless where/whom it is registered…

Good one for the bookmarking.