What is Reverse IP Lookup?

Unlike regular DNS lookup which finds the IP address for a domain, Reverse IP lookup finds all the domain names hosted on a single IP address. This is crucial for shared hosting environments.

Why should you care about your "Neighbors"?

On shared hosting, the reputation of your IP address is shared. If your "neighbor" is sending spam or hosting malware, your legitimate emails might land in the spam folder, and your SEO ranking could be penalized by Google ("Bad Neighborhood" effect).

Security Implications

If a hacker compromises one site on a poorly secured shared server, they might be able to pivot and access other sites' files if permissions are not strictly isolated. Knowing who else is on your server helps you assess this risk.