Reverse DNS Lookup
Resolve PTR records and verify forward-confirmed reverse DNS
This free online reverse dns lookup runs in your browser and is part of our Developer Tools collection.
Reverse DNS Lookup
Resolve an IP address to its PTR hostname and perform an optional forward-confirmation check.
What this helps with
- Validate PTR records for mail and infrastructure hosts
- Triage suspicious traffic sources by hostname patterns
- Learn forward-confirmed reverse DNS behavior
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