What Is Reverse IP Lookup and How to Use It
Reverse IP lookup finds "which website domains are hosted on a given IP." On shared hosting, one IP often binds many sites, and a reverse lookup lists them.
It differs from rDNS (PTR records): a PTR is the single hostname an IP maps to, while a reverse domain lookup is the batch of websites hosted on that IP.
What it can find
The list of website domains bound to the same IP, useful for seeing what other sites are on a server and checking co-hosting risk.
How to use it
Look the IP up on this site, expand the "Reverse IP Lookup" card, and click to query.
FAQ
- Does the lookup always find everything?
- It can't guarantee completeness. Reverse lookup relies on third-party passive DNS data, so obscure or newly bound domains may not show up.
- What's the difference between reverse lookup and rDNS?
- rDNS/PTR is the formal IP -> single hostname record; reverse domain lookup is the batch of websites hosted on an IP, sourced from passive DNS data.
Want to check a specific IP? Enter it on thehome pageto see its full details: location, IP type, risk score, blocklist status and more.
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