DomainTools Research

Domain Research Tools

The most comprehensive Whois database on the planet and our proprietary technology let you gather the most complete picture of a domain name you can get anywhere. Use our industry-leading tools to research current and historical domain information—discover the details of a domain's current ownership, learn a domain's pedigree, or conduct a Reverse Whois Lookup to find all the domains ever owned by any specific company or individual.

Who Owns that Domain Name?
Use our Whois Lookup Tool to find the owner of almost any domain name, including that owner's detailed contact information.
Whois Search >
Whois History
Track domain ownership since 1995 with access to our massive database of historical Whois records—a must in defending trademarks or performing due diligence. Whois History >
Ownership Search: Reverse Whois Lookup
Enter an individual's or a company's name, phone number, email address or physical address and learn all the domain names they own or have ever owned. Reverse Whois >

Hosting History
View historical IP addresses, name servers, and registrars for any given domain name. See all domain transfers, dates and transfer-to locations. Hosting History >
Screenshot History
View images of what a Web site looks like now, and of what it has looked like throughout its history. Screenshot History >

Other Domain Research Tools

Domain Search
Search any domain name and check the availability status of that name in all major domain extensions.
Bulk Check
In a hurry? Check the availability status of up to 100 domains at one time.
Domain Suggestions
Enter a keyword and let us find the right available domain name for your product.
Domain Typo Finder
Discover the common typographical errors associated with any domain name.

Network Research Tools

DomainTools gives you comprehensive network information, too! We have the network diagnostic tools you’ve come to expect, PLUS the domain-specific tools and reporting that DomainTools does best!

Name Server Report
Get a list of all domain names hosted on any server we monitor. Name Server Report >
Reverse IP
Discover all the domains hosted at any specific IP address. Reverse IP >
My IP Address
Find detailed information about the IP address from which you're currently accessing DomainTools. My IP Address >
IP Explorer
Explore the range of all IP addresses and discover how any particular IP block is being utilized. IP Explorer >

DNS Lookup
Learn about the domain name server hosting any domain name or IP address. DNS Lookup >
Traceroute
Determine the route of data as it travels the network from you to any domain. Traceroute >
Ping
Determine the availability and relative congestion of any domain. Ping >