The free Reverse IP Lookup finds other domains that share an IP address. Enter an IP address or a domain and the tool lists the other websites hosted on that same address. It is useful for seeing who shares your server, researching a hosting setup, or spotting the neighboring sites on a shared host. It is free and needs no account.
On shared hosting, many websites live on a single IP address. A reverse IP lookup works backward from the address to the names that point at it, which tells you how crowded a server is and what other sites sit alongside a given domain.
How to Do a Reverse IP Lookup
- Enter an IP or domain. Type the IP address, or a domain to resolve first.
- Look up. The tool finds domains associated with that address.
- Read the results. See the other domains sharing the IP, where available.
What the Results Tell You, and Their Limits
A short list, or none, suggests a dedicated or lightly shared address, while a long list points to shared hosting with many neighbors. This is handy for understanding a hosting setup or checking who shares your server. Two honest caveats, though. First, the results are a best-effort sample drawn from lookup data, not a guaranteed complete inventory of every domain on an address, so treat a result as indicative rather than exhaustive. Second, this tool relies on an external lookup service with a daily limit, so during heavy use it may reach that limit; when it does, it tells you clearly to try again later rather than pretending an address has no domains. An empty result genuinely means none were found in the data, and a limit message means the service was busy, and the tool keeps those two cases distinct.
When to Use a Reverse IP Lookup
- Checking your neighbors. See what other sites share your server on shared hosting.
- Researching a host. Gauge how crowded a hosting IP is.
- Investigating a site. Find domains associated with the same address.
- Evaluating shared hosting. Understand the neighborhood before choosing a host.
Related SEO Tools
You can also resolve a domain to its IP, find the IP's location, or check a domain's hosting.
