Free reverse IP lookup tool to discover all domains hosted on a single IP address. Useful for security research, competitor analysis, and identifying shared hosting environments.
Every server on the internet has an IP address. On shared hosting, dozens or even hundreds of websites can share the same IP. A reverse IP lookup tells you which domains are hosted on that same address.
Our Reverse IP Lookup tool makes this easy.
When to Use Reverse IP Lookup
- Security research - Find other sites on a server that might be compromised
- Competitive intelligence - Discover what other sites a hosting company hosts
- SEO audits - Check if you share IP space with spammy or penalised sites
- Network mapping - Understand the infrastructure behind a website
How It Works
Type in any IP address and the tool scans DNS records to find every domain that resolves to it. The results show domain names, and sometimes additional metadata depending on what's publicly available.
Try it with your own website's IP first to see how many other sites share your hosting environment.