PTR Record

PTR records map an IP address back to a hostname. They are used for reverse DNS, which is important for email reputation and security checks.

What PTR is used for

Mail servers often require a valid PTR record that matches the sending hostname. Use the PTR lookup tool to validate reverse DNS and compare it with the forward A record lookup.

Common mistakes

• PTR records missing entirely (common on new servers).
• PTR points to a hostname that does not resolve back to the IP.
• Trying to edit PTR in the regular DNS zone instead of the IP provider panel.

How to check PTR online

Run the PTR lookup and verify forward‑reverse consistency. For mail troubleshooting, also review the MX guide and the Email DNS Check.

Related records

PTR ties closely to A records and impacts email delivery alongside TXT/SPF records.