Reverse DNS (PTR) Lookup
Resolve IPv4 and IPv6 addresses to their hostnames using client-side DNS-over-HTTPS (DoH).
About this tool
Perform reverse DNS lookups for IPv4 and IPv6 addresses using DNS-over-HTTPS Reverse DNS (PTR) Lookup runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Reverse DNS (PTR) Lookup is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Reverse DNS (PTR) Lookup?
Open Reverse DNS (PTR) Lookup, enter or paste your input, and copy the result. The page works without an account.
Related guides
IP Intelligence — PTR, ASN, and RBL in One Lookup
Reverse DNS, Team Cymru ASN mapping, and Spamhaus ZEN status for public IPs via the DevTools backend. Use it when you need reputation context, not just a PTR.
What Is Reverse DNS (PTR) and How Does It Work?
Understand PTR records, reverse DNS zones, and common uses for IPv4 and IPv6 address lookups. Use them for mail, logs, and host identification.
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