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CNAME lookup

Verify custom-domain and CDN aliases without guessing which record the provider needs.

Anonymous checks are limited to 10 per minute and 60 per hour per address. Results are cached for 60 seconds and not published anywhere.

How it measures

  • The CNAME record for the exact name is fetched from the chosen resolver and normalized.
  • Switch the type to A or AAAA to see the addresses the alias eventually resolves to.

Limits

  • Only one level is shown; chained CNAMEs need a second lookup of the target.
  • A name with an A record and no CNAME correctly returns no records; that is not an error.

Troubleshooting

No records for a name that should alias
The record may have been created as an A record, or at the wrong name. Apex names cannot carry a CNAME; use the provider's A/ALIAS instructions.

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