Find information like who is the owner of a website or the name of the registrant. You simply have to copy and paste the URL of a site in the required field and click on the "Check" button.

Enter Upto 10 Domains (Each Domain must be on separate line):

WHOIS is not an acronym although it appears as one, it's pronounced as the phrase 'who is' and is a protocol used to query databases. WHOIS stores data of every website that’s on the internet. WHOIS stores data of the domain name, its registrant, and registrar. The registrant is the owner of the domain, and the registrar is the party responsible for registering the domain. The WHOIS checker tool displays the complete information about the domain.

WHOIS history can be traced back to the early days of the internet. In 1982 Internet Engineering Task Force published a protocol for a directory service for ARPANET users. With the advent of Internet, WHOIS began to serve the needs of different users.

Today, there are millions of individuals, firms, business organizations; educational institutions and governments register domains. They start by seeing if the domain name that they want to register is available. They do this by using domain name sellers sites like Godaddy, Namecheap, etc. These sites use WHOIS to check if a domain name is available. If available they sell it to the customer.

WHOIS does not maintain a single database of all the registered domains. It is managed by a network of independent entities known as registries and registrars. The entities are responsible for maintaining accurate records of the domain names contact information. It includes data of the domain name owner and contact details, plus that of where the domain is being hosted from.

Individuals, businesses, educational institutions utilize hosting services which are provided by firms that are in this business. The hosting service provider has the infrastructure and expertise to provide internet services.

Any business entity that wants to become a WHOIS registrar must earn ICANN certification. The entity must also have the equipment, utilities, and workforce to run and maintain this service. WHOIS registries must allow anyone to search and view the domain name registered holder's name and contact data.

The Whois checker tool is provided by some SEO tools providers on the internet. The searchenginereports.net provides the WHOIS checker tool. When you use this tool, you can get information on three domains. The report generated shows the domain name, if it's registered, the name servers, registrar and the expiry date of the domain.

WHOIS registrant lookup tools go a step further and display the name and email address of the registrant. You can also do a reverse WHOIS to see if the registrant is associated with other domain names.

Since WHOIS maintains databases of all domains on the internet, it's useful when you want to get information of the owner and service provider of the domain. Security agencies use this information if they want to shutdown a domain and want to know who owns it. Government agencies want to know which sites are putting out malicious news or are criticizing the government. The individual business owner may want to see who their rivals on the internet are. This information is easy to come by with a WHOIS checker.

WHOIS domaintools.com provides whois lookup, domain availability and IP search. It’s a very comprehensive and handy toolkit for SEOs and webmasters. The tools can be used to see:

  • Who owns domains?
  • Their location
  • Their service provider
  • IP address
  • Location
  • Domain status
  • Hosting history
  • Website title
  • SEO Score
  • Images
  • Links
  • WHOIS record

This information is very handy especially when it tells you the SEO score and the number of internal and external links that a domain has. With, this information available in place you can decide how to improve your own domain to make it more user friendly, informative and current.

You can also use WHOIS checker to examine your hosting service and see if you want them to make any changes to improve the loading speed or space requirement of your site. When you have been managing a website for a while you might want to purchase other domains as your business expands. Therefore searching for relevant domain names will be easy with WHOIS checker tool.

WHOIS is like the phone directory of the internet. All registered, active, inactive domains with their host and contact addresses exist on it. It's extremely useful for anyone who wants to get detailed information about a domain.

WHOIS history provides the entire history of a domain since it was registered. Even in the domain is no longer active or the original purchaser discarded it, the history will be recorded on WHOIS. This can be very useful if you want to examine the history of a domain that was purchased but never used. You might be interested in finding out the reason for the domain not being activated. For example you want to launch a satirical news site and find a domain of a similar site that you knew. You come to know that the site is no longer active and you will want to know the reason for this. WHOIS checker, reverse WHOIS and WHOIS history would be useful tools to use to complete your investigation.

WHOIS data is stored and looked up using a thick or thin lookup. Thick data is stored in a WHOIS server of a particular data set. For example all the .edu WHOIS servers will have all the data of domains that have .edu in their name.

A thin WHOIS server only contains the information that services a particular area. This is in turn connected to a thick server that has the complete information of that data set.

WHOIS is a very practical service for internet users and SEOs. They can see the information of their own websites plus that of any domain that they want to. The data returned by a WHOIS checker query is easily readable and presented in a user friendly fashion. We go through phone books to find information pertaining to businesses and private individuals having phones in one town or city. WHOIS has the entire internet's directory on its databases.