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Reverse DNS Lookup

Find the host name (PTR record) of an IP address.

About Reverse DNS Lookup

Look up the PTR record of an IPv4 or IPv6 address and check that the host name points back to the same address (forward-confirmed reverse DNS), which mail servers rely on.

How to use

  1. Type an IP address, host name, domain or coordinates – or use the values filled in for you.
  2. Press Enter or the button – results appear instantly, and the page link keeps your query for sharing.
  3. Click any value to copy it; tables can be sorted and exported as CSV or JSON.

WhereNex does not store the addresses, names or positions you look up. IP locations come from our own copy of the DB-IP database (CC BY 4.0) and are approximate.

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