Reverse IP Lookup
Enter a domain or IP to see which other websites share the same server, along with the reverse DNS (PTR) hostname.
Lookups use public DNS and passive DNS data. Searches are not stored.
How to use the Reverse IP Lookup
Enter a domain or IP
We resolve domains to their IP automatically.
We search the IP
Reverse DNS and a passive DNS database are checked.
See the websites
All domains found on that IP address.
Why use our Reverse IP Lookup?
Shared hosting check
See how many sites share your server.
Reverse DNS (PTR)
The hostname assigned to the IP.
Competitor research
Discover other sites run by the same owner.
Bad neighbours
Spot spammy sites that share your IP.
Copy the list
Copy all domains with one click.
Filter results
Search within the list instantly.
Frequently asked questions
Everything you need to know about the Reverse IP Lookup.
Back to the toolWhat is a reverse IP lookup?
It lists the domain names that point to a given IP address — useful to see which websites are hosted on the same server.
Why does a big site show many domains?
Large sites use CDNs like Cloudflare, where thousands of unrelated domains share the same IP addresses.
Is shared hosting bad for SEO?
Not by itself. Google does not penalize shared IPs, but a slow or overloaded server can hurt speed and user experience.
What is a PTR record?
A PTR record maps an IP address back to a hostname. Mail servers use it to check that email comes from a legitimate server.
Is the list complete?
The list comes from passive DNS data and may not include every domain, especially very new ones.
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