Description: This tool performs a reverse IP domain check which takes the domain name or IP address of a web server and searches for other sites known to be hosted on that same web server. Data is gathered from search engine results, which is not guaranteed to be complete. Knowing the other web sites hosted on a web server is important from both an SEO and web filtering perspective, particularly for those on shared web hosting plans.
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Note : For those of you interested, as of May 2014, my database has grown to over 100 million domain names. I am now offering this domain list for purchase .
A reverse IP domain check takes a domain name or IP address pointing to a web server and searches for other sites known to be hosted on that same web server. Data is gathered from search engine results, which are not guaranteed to be complete. IP-Address.org provides interesting visual reverse IP lookup tool. Knowing the other web sites hosted on a web server is important from both an SEO and web filtering perspective, particularly for those on shared web hosting plans. More about this tool . Set an API Key
Background All web sites are hosted on web servers, which are computers running specialized software that distribute web content as requested. Each web server typically has a single IP address, a unique numeric identifier assigned to no other computer on the entire Internet. Web sites are usually associated with domain names, textual strings like "google.com" that are easier for users to remember than numeric IP addresses. Since HTTP version 1.1, many domains can be hosted on a single IP address. As of 2003