DNS & Email Tools
PTR Record Lookup
Check reverse DNS and map IPs back to hostnames.
Updated 2025-12-01
Reverse DNS Lookup
PTR Record Lookup
Convert IP addresses to hostnames via reverse DNS lookup.
About PTR Records
PTR records (Pointer records) enable reverse DNS lookups, mapping IP addresses to hostnames. They are essential for email deliverability, network troubleshooting, and security verification. PTR records are stored in special ARPA zones (in-addr.arpa for IPv4, ip6.arpa for IPv6).