Reverse DNS, also called a PTR record, maps an IP address back to a hostname.
Why it matters
PTR records are commonly checked by mail systems and monitoring tools. If you run email services, a correct PTR record is important.
Requirements
- The hostname should resolve forward to the same IP address.
- The hostname should be a real domain you control.
- It should not be a generic or misleading name.
To request a reverse DNS change, open a support ticket and include the IP address and hostname you want configured.