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FREE EMAIL DNS TOOL

DKIM Lookup

Check the public DNS record for a known DKIM selector. Find the selector in the s= field of a message’s DKIM-Signature header.

Enter a domain, not an email address or URL. Use punycode for international domain names.
The s= value from a DKIM-Signature header.

The queried DNS name is sent to Google Public DNS. No email content or mailbox credentials are requested.

Enter a domain to view its public DKIM records.

What this lookup tells you

Use the signing domain from d= and selector from s= in an actual message. The visible From domain may differ from the DKIM signing domain.

Scope of this check

A selector is required. The tool does not discover selectors or verify an email signature. A published key alone does not prove messages are correctly signed. Results reflect one recursive resolver at the time of the query; caching can delay visibility of DNS changes.

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