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Look up CNAME record: the alias target and TTL for a host

A CNAME record makes one hostname an alias for another, the canonical name. This lookup shows whether a name is a CNAME, what it points to and the TTL, which is how you verify the records that DKIM, hosted DMARC, MTA-STS and website providers ask you to create.

See it in Action

How to read this result

  • Target: the canonical name the alias points to. Resolvers return the target's records for the alias.
  • TTL: how long the alias is cached.
  • No CNAME: the name is not an alias; it holds its own records or does not exist.
  • A name with a CNAME cannot also hold TXT, MX or other records, which is why DKIM and verification records on an aliased name fail.

See every record on the target name

FAQ

Frequently Asked Questions

A CNAME record maps a domain to another domain, while an A record maps a domain directly to an IP address.

Yes, you can use the tool to check CNAME records for both main domains and subdomains.

Use CNAME records to point your custom domain to the hosting provider's domain, enabling your site to be accessed via your chosen domain.

If a CNAME record points to a non-existent domain, users will encounter errors when trying to access your site.

Yes, the tool can identify CNAME records used for email services, such as those for email verification or tracking.

CNAME records themselves do not directly impact SEO, but proper configuration ensures that your domain resolves correctly, which can affect search engine indexing.

Update your CNAME records through your DNS hosting provider’s control panel to ensure correct domain aliasing and redirection.

The tool may not show historical data or resolve issues related to DNS propagation delays. For complete diagnostics, additional tools might be needed.

Yes, it can help identify misconfigurations or incorrect settings related to CNAME records, aiding in troubleshooting DNS issues.

Review and update your CNAME records whenever you make changes to your domain setup or hosting services to ensure accurate redirection and functionality.

Emails Analyzed

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DMARC Reports Processed

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Sending Sources Checked

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