Reverse Ip Domain checker detect all websites hosted on the same ip address. This tool is used to prevent hacking attacks. If number of domain hosted on same ip address are large then you website is less secure. And if less number of domains hosted on an ip address then you can consider your website as safe.
This tool will display all domain hosted on your shared server. You can also use this tool to ensure that the ip address that your website is using not being used by any other website. More number of websites on same ip address can harm your ranking in the search engines.
Shared server host your domain on shared ip addresses. In that case it is tough for you to rank your website, because search engines also check how spam an ip address is. Dedicated server do not shared your ip address with any other domain. So it is preferred to use dedicated server if you want to do good SEO for your website.
Using this tool is very easy. Enter your domain name or ip address in the input box and click on the Check reverse ip domains button. Within seconds it display the whole list of domains hosted on your server.