DomainTools offers the most comprehensive searchable database of domain name registration and hosting data. Combined with our other data sites such as DailyChanges.com, Screenshots.com and ReverseMX.com, users of DomainTools.com can review millions of historical domain name records from basic WHOIS,and DNS information, to homepage images and email settings. The Company’s comprehensive snapshots of past and present domain name registration, ownership and usage data, in addition to powerful research and monitoring resources, help customers by unlocking everything there is to know about a domain name. DomainTools is a Top 200 site in the Alexa rankings.
DomainTools' other services include:
ReverseMX.com: Collects and analyzes MX records to uncover relationships among email servers and the networks that host them. http://www.reversemx.com/
DailyChanges.com: Monitoring DNS changes for domain names and presents meaningful and actionable reporting on those changes. http://www.reversemx.com/
Screenshots.com: Archive of over 250 million current and historic images of websites. The technique is different than most archive services that only capture the web page code and often miss external resources like ads and images. Screenshots.com captures exactly what a visitor would see when they came to the site. http://www.screenshots.com/
edit Social Media
edit Whois Lookup
The most comprehensive Whois database in the world. Search domain ownership records (enter a domain name or IP address) to find out who owns a domain, their email address and physical address, their phone number, and a lot more. This ownership search is FREE.
edit Domain Marketplace
A one-stop place where you can research available domains to buy. DomainTools aggregates for-sale listings and domain auctions from major domain sales platforms with available domains from their own suggestion technology to create a massive data set of domains for purchase or registration.
Proprietary scoring algorithm matches your search criteria with keyword popularity metrics to ensure the best domains rise to the top.
One-click access to DomainTools' partners allows users to complete a domain acquisition or registration. Or, adjust the filters to sort order until the results match specific criteria, then quickly add domains to 'favorites' for later review.
Advanced tools let users add expiring domains and make-offer listings to search results, specify which top-level domains (TLDs) to include, and limit the length of the domain a user was searching for.
edit Whois History
Enter a domain name to see *every Whois record on file* with DomainTools. Learn about critical ownership changes and see the dates when those changes were recorded.
edit Reverse Whois
Find every domain name ever owned by a specific company or individual. Just enter one or more unique identifies (such as an individual's or company's name, phone number, email address or physical address) and learn all of the domain names they own or have ever owned.
edit Domain Monitor (FREE for up to 100 Domains)
One of the best offerings from Domain Tools is their Domain Monitor. The Domain Monitor allows you to monitor the daily status, via e-mail, of any domain you might be interested in. Domain Monitor supports TLDs of .com, .net, .org, .biz, .us and .info.
The Domain Monitor will send you updates when a domain you are interested in purchasing will come to be available. It will let you know when a domain is about to expire so you can purchase it.
edit Brand Alert
Be alerted when someone registers a domain name with any term or phrase in it that you specify. Emails are sent daily and you can adjust which terms get emailed to you and which ones don't. Supported TLDs are .com, .net, .org, .biz, .us, and .info.
edit Registrant Alert
Receive a notification whenever a person or company registers a new domain, has one transferred to the, or transfers a domain out of their control.
edit Name Server Report
Receive daily notificaion of domain name additions, removals and updates on the name servers you want to monitor. Name Server Reports will create a full list of .com, .net, .org, .biz, .us, and .info domains on any name server that DomainTools monitors.
edit Reverse IP
Get a list of the domains currently hosted at any given IP address. Reverse IP returns up to 2,000 domains hosted on a single IP, including all the common gTLD and any ccTLD domains. For more popular IPs with more than 2,000 domains, you can order a Reverse IP report and DomainTools can deliver it to you in minutes. Reverse IP reports are useful to help sort, parse, and review large lists of domains.
edit Hosting History
This DomainTools exclusive tool allows you to view historical IP addresses, name servers, and registrars for a given domain name. If a domain name has changed its web host or transferred its domain name to another registrar, you will be able to see the old value, the new value, and when the event happened.
edit DNS Tools
The DNS Tools page allows you to do simple things like DNS lookup, ping or traceroute from your web browser. The tool kit also allows you to view the information on your own PCs IP address as well.
By registering with Domain Tools you get free and unlimited access to essential features on their site and a saved profile where you can save your search information and access it from anywhere online.
For more advanced users, there are standard and professional memberships available that help to maximize access to deeper data and monitor more activity. Prices range from $30/month for a standard membership to $50/month for a professional membership.
The DomainTools API gives you access to nearly every piece of data used on Domaintools.com with a pay-as-you-go structure. Developers can even get FREE API access which includes 500 Domain Profile queries and 500 Whois Lookups per month.
edit Community Reviews
There is text here which looks like an opinion, review or commentary. Please enter comments and their response in a constructive manner.
Please note that opinions do not reflect the views or policies of AboutUs.org.
edit Amazing Site!
This site is by far the most complete site for looking up whois information on any domain. Not only is the current information accurate and complete, but they maintain historical data which no one else I've found does.
- posted by Raymond King on Jan 16, 2007, 9:55 pm
Very Usefull, Extensive Info
- posted by Thomas Hull on Nov 8, 2006, 7:56 pm
edit Related Domains
16 Jan. 2007
How visible is your website?
A better home page will help you show up in search results.
|Titles & Headings|
|Links & Images|
|Search Engine Friendliness|
See how your digital marketing stacks up,
and get ahead.
How easily can your site be found around the Web?
|value for Google crawl date|
|value for Bing indexed pages|
Home Page Analysis
The Home Page Analysis helps you understand how a site's home page appears to both search engines and site visitors.
DomainTools.com Home Page Analysis Summary
Titles & Headings
The title and headings on the home page tell people and search
engines what a website is about.
Analyze the title & headings of the home page for free or the entire site.
Links & Images
Relevant links to other sites are good for people and search
engines. Images on a web page should be described for visually impaired
visitors and search engines.
Analyze the links & images of the home page for free or the entire site.
Search Engine Friendliness
A few simple technical fixes can make any site show up better in
The title of a web page appears in search results as the link to that page. Learn more ...
The title of a web page appears as a clickable link in search results and bookmarks. A descriptive, compelling home page title with relevant keywords can increase the number of people visiting the site.
Search engines view the text of the title tag as a strong indication of what the page is about. Accurate keywords in the title tag can help the page rank better in search results.
A title tag should have fewer than 70 characters, including spaces. Major search engines won't display more than that.
The title tag of your home page (and any other page on your site) should not contain the site’s domain name or URL. These will appear near the title in search results, so use your 70 characters to tell people what the page is about. The title tag should not contain any HTML, because it will be displayed incorrectly or not at all.
- Good: This web page has a title tag.
- Good: The title tag is a good length.
- The title of this site's home page:
- “Domain Name Lookup, Domain Whois | DomainTools”
The H1 heading is an important sentence or phrase on a web page that quickly and clearly tells people and search engines what they can expect to find there. Learn more ...
Just one H1
In most cases, a web page should have just one H1 heading. Using multiple H1 headings is okay if that is a logical way to organize the page, but they should be used sparingly. That’s because search engines can view multiple H1 headings as an attempt to signal that all the content on a page is equally important, a tactic that’s seen as an attempt to game the search engine algorithms.
Search engines look for an H1 heading to determine what a page is about. Human visitors do, too.
Content and placement
The H1 heading appears on the web page itself, unlike the page title, which people will see mostly in search results.
The H1 tag (which contains the H1 heading) is usually listed first among the other heading tags for a page. None of the major search engines, however, will penalize a site for listing H2 through H6 tags ahead of the H1 tag.
- Good: This page has one H1 heading.
- H1 heading for this site's home page:
- “Whois Lookup, Whois History, Reverse Whois, DNS & IP Tools”
DomainTools.com in search results
You can see below how most search engines will display this site's home page in search results. The title is used as the link to the page, and the meta description appears below the title.
Domain name research, including comprehensive Whois Lookup, Reverse Whois Lookup and Whois History. Domain name monitoring tools and buyer/seller tools...
Your website's robots.txt file can tell search engines to ignore parts of your site. Learn more ...
Website owners usually use robots.txt to let search engines know which pages or sections of their site shouldn't be indexed for example, web contact forms, print versions of web pages and other content that's duplicated elsewhere on the site. Robots.txt can also be used to request that specific robots not index a site. For more information, read How To Use Robots.txt.
Search engine robots
You'll need to know the names of specific search engine robots - or "bots" – if you’re going to exclude any or all of them from any part of your site.
- Google’s bot is called Googlebot. Google is the world’s largest search engine, and is where many people discover new websites.
- Bing’s bot is called msnbot. Bing also provides search results to people using Yahoo to search the Web. Together, Bing and Yahoo are the second largest search resource, after Google.
- Baidu’s bot is called Baiduspider. Baidu is a major search engine in China, and the number of people using it is increasing rapidly.
- AboutUs.org’s bot is called AboutUsBot. To create a Site Report, AboutUs uses crawling technology that’s similar to what search engines use.
- Good: This website’s robots.txt file is not blocking major search engines from crawling its pages. Your website can appear in any engine’s search results.
This website can live at www.DomainTools.com or DomainTools.com. It's best for your site's visibility to live at just one URL, or web address. You'll want to create a 301 redirect to the URL you choose from the other URL. Learn more ...
Choose one or the other
If the same web page exists at two different URLs, people can choose to link to one or the other. Links from other sites to your website are valuable — they tell search engines that your site is important to people. By splitting valuable links between two identical pages, you're diluting the power of those links to help a page rank higher in search results.
Learn more about why you should have just one home page: Read Twin Home Pages: Classic SEO Mistake
- Good: Your website resides at www.DomainTools.com, and DomainTools.com is permanently redirected to it.
Search Engine Visibility
Check this site's prominence around the web and in major search engines.
Date Last Crawled
|value for Google||Jun 06, 2011|
|value for Bing||Not Available|
Check this site's presence on news sharing and community sites.
Social Media Visibility
|value for Digg||20|
|value for Dmoz||2|
|value for Google Groups||490,000|
|value for Yahoo Answers||57|
Below we show domains that redirect to DomainTools.com.
We survey every domain on the Internet ending in .com, .net, or .edu to see if any redirect to this website. Large or famous websites like Amazon.com often have many sites redirecting to them.
Domains that redirect to the home page of DomainTools.com
Capture visitors who type the wrong name
It can make a lot of sense to redirect a domain to an existing web page. For example, many people are likely to type wikipedia.com when they are really looking for wikipedia.org. Creating a redirect from wikipedia.com to wikipedia.org helps these people get to the site they want.
Domains that redirect to a page within DomainTools.com
Get people to a specific web page
- redirects to: http://domaintools.com/live-auction/
- redirects to: http://domaintools.com/webmasters/surveybot.php
- redirects to: http://domaintools.com/research/reverse-whois/
- redirects to: http://domaintools.com/research/reverse-whois/
- redirects to: http://domaintools.com/research/reverse-whois/
- redirects to: http://domaintools.com/research/screenshot-history/