Reverse IP Domain Check
Remote Address    
Find other sites hosted on a web server by entering a domain or IP address above.
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Note: For those of you interested, as of August 2012, my database has grown to over 60 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. If you need shared web hosting (linux based or windows based asp.net hosting), you may find web hosting finder tool useful.
More about this tool. Set an API Key.