Generator

PTR Record Builder (Reverse DNS)

Build PTR records for IPv4 and IPv6 reverse DNS. Reverse the address, append in-addr.arpa or ip6.arpa, point at your hostname.

IP address (v4 or v6)

Hostname (PTR target)

Most ISPs/hosts manage reverse DNS for you — ask them to publish this record at the IP's reverse zone.

PTR record

10.113.0.203.in-addr.arpa. IN PTR mail.example.com.