Maps an IP address to a domain name (reverse DNS)
The PTR (Pointer) record is used for reverse DNS lookups - mapping an IP address back to a domain name. This is the opposite of A and AAAA records, which map domain names to IP addresses.
PTR records are stored in special reverse lookup zones under in-addr.arpa (IPv4) or ip6.arpa (IPv6). The IP address is reversed in the record name. For example, 192.0.2.1 becomes 1.2.0.192.in-addr.arpa.
Reverse DNS is important for email deliverability (mail servers check PTR records), security logging, and network troubleshooting. PTR records are typically managed by your hosting provider or ISP, as they control the IP address allocation.
1.2.0.192.in-addr.arpa. IN PTR hostname.domain.com.34.216.184.93.in-addr.arpa. 3600 IN PTR example.com.The IP address 93.184.216.34 reverse-resolves to example.com.