Reverse DNS Lookup
Find the hostname associated with an IP address via reverse DNS lookup.
How to use Reverse DNS
- Enter a valid IPv4 or IPv6 address.
- Click 'Lookup' to query the DNS system.
- View the hostname(s) associated with the IP address.
About Reverse DNS
What is Reverse DNS?
Reverse DNS (rDNS) resolves an IP address to a domain name, unlike standard DNS which resolves domain names to IP addresses.
PTR Records
Reverse DNS lookups use Pointer (PTR) records stored in the DNS system.
Use Cases
Commonly used for network troubleshooting, spam filtering, and verifying the identity of email servers.