Open a FREE Account| Log in | Help
Deeper research. More data. Try it for FREE!
DomainTools has the most comprehensive collection of domain name ownership records in the world!

Whois Lookup, Whois History, Reverse Whois, DNS & IP Tools

Search Domain Ownership Records
Tell us a domain name and we'll tell you all about that domain's ownership. What's this?
Example: domaintools.com or www.domaintools.com or domain tools or 207.178.4.6

DomainTools makes it simple to find out who the owner of a specific domain name is. We'll tell you who owns a domain, their email address and physical address, their phone number, and a whole lot more!

This ownership search is FREE—just enter the domain name you want to know about and click the Search for Domain button.

And you can enter the domain name you're interested in without being too particular—here are examples illustrating the three different forms we'll accept:

  • domaintools.com
  • www.domaintools.com
  • domain tools

Any of these forms will give you the exact same results.

AND, if all you have is an IP address, you can enter that, too! Searching for an IP address will give you ownership information for that specific IP address.

Here are just a few of the things you can do at DomainTools:
New to DomainTools?
Watch this video to learn more about DomainTools, discover why over one million members have come to rely on us, and get a FREE PRO Trial!
Recent Blog Posts
Hack Days at DomainTools
For those of you not familiar with the term “hack day”, it’s commonly used aRead
Analysis of .PW Domain Registrations One Month After Launch
The launch of .PW has received a great deal of attention because it can indiRead
DomainTools on the Road
This May is a busy month for DomainTools! We're exhibiting at three conferenRead
 

A Membership Option
to Suit Your Needs

DomainTools has a membership package to fit every need, including yours!

  • Nearly a million customers have come to rely on us for almost a decade
  • We're one of the top 250 most trafficked websites in the world (Alexa.com, 2012)