🔄Reverse DNS Lookup
Find the hostname associated with any IP address using PTR record lookup. Identify servers and services behind IP addresses.
🔄 Reverse DNS Lookup
Enter an IP address above.
How It Works
We construct the reverse DNS name (e.g., 4.4.8.8.in-addr.arpa for 8.8.4.4) and query Cloudflare's DNS resolver for the PTR record associated with the IP address.
Frequently Asked Questions
What is reverse DNS?
Reverse DNS (rDNS) maps an IP address back to a hostname, the opposite of a regular DNS lookup. It uses PTR records and is commonly used for email server verification and network troubleshooting.