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The Reverse IP Domain Lookup Tool lets you find the domains that get hosted on a competitor's IP address. A reverse IP command gets run whenever your visitors are facing problems on your site. Find a secure site to attack the same server and bypass their target site's security. The tool will record all the domains of the websites that are sharing your dynamic IP address. It allows you to understand all the sites which share the same IP address and can also be used to check your competitors' sites.
It may be legitimate information about your competitor's domains. Contact your hosting provider to tell them about the matter. You run a reverse IP address lookup to find out the domain names you're sharing. Particularly with shared hosting, there are many sites hosted on the same IP address. Some of them may be with adult content, gambling-related, torrents.
Ask your web hosting company to move you to another server or another IP address for your site. The Free Domain Age Checker Tool can be used to check if your code is OK, and other sites where sharing your IP address are functioning fine. Reverse IP lookup is one of the first things you can do to check if someone offers you links hosted on the same server.