DNS · Fix guide
Reverse DNS not found
- DNS
- Domain Name System
- PTR
- Pointer record
The primary web address has no PTR record.
What is reverse DNS?
Reverse DNS maps an IP address back to a hostname using a PTR record. It is especially important for outgoing mail servers, where a missing or inconsistent PTR can reduce trust and deliverability.
What to do next
- If this address sends email, ask the address owner or host to set its PTR.
- Make the PTR hostname resolve back to the same address.
- For web-only infrastructure, no action is normally needed.
How to verify the fix
Look up the IP address and confirm its PTR and forward address agree.
When this result may be wrong
PTR records are controlled by the IP owner, not ordinary domain DNS, and are optional for web servers.
Ready to check again?
Check a domain
Run a fresh report after DNS caches and platform changes have had time to update.