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Convert IPv4 or IPv6 to a reverse lookup name and view public PTR records.

Only public DNS records are supported, please do not fill in internal or sensitive domain names.

No query has been made, filling in or loading examples will not initiate a request.

Instructions for use

  1. Enter the complete IPv4 or IPv6 and click to query PTR records.
  2. The page first generates the in-addr.arpa or ip6.arpa name locally and then queries the public DNS.
  3. View records, TTL, status and query time, which can be copied or cleared; modifying the input will cancel the old query.

Input and output examples

Example input
192.0.2.1
Example output
Query the PTR of 1.2.0.192.in-addr.arpa

The above is a demonstration only, not real-time results. Public DNS records change, and an empty response has different meanings than a failed query.

FAQ

No. It is set by the address manager; this tool does not verify forward resolution consistency, nor does it provide reputation judgment.

Calculation basis and reference materials

The page first generates the in-addr.arpa or ip6.arpa name locally and then queries the public DNS.

Content check: · About this site and content description

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