Reverse DNS Lookup
Find the hostname behind an IP address, or resolve a hostname to its IP.
About Reverse DNS Lookup
This tool helps you find the domain name or hostname associated with a specific IP address. It can also resolve a hostname to its IP address.
A Reverse DNS Lookup (rDNS) determines the domain name associated with a given IP address — the opposite of a forward DNS lookup.
This can be useful for identifying your ISP's hostname on your IP address, verifying mail server identities, and network troubleshooting.
Example: IP → Hostname | Hostname → IP
More info on Wikipedia: Reverse DNS lookup