Follow a CNAME alias to its canonical target name

For web teams checking a launch or tracing a fault, this test provides an immediate point of reference. Follow a CNAME alias to its canonical target name.

Follow a CNAME alias to its canonical target name. The result highlights the live configuration and the clues that matter for diagnosis.

How to use

Enter the name or alias whose CNAME record you want to follow, using the exact spelling.
Launch the lookup to query public DNS and find the canonical alias for that name.
Read the returned target name and check that it matches the service or host you expect.
If the chain continues, note each step so you can understand where the alias finally leads.
Clear the field to test another alias or to recheck the record after a configuration change.

Example

You are setting up a subdomain that should point to an external service. You test the CNAME to confirm that the alias returns the intended target name before putting the site online, which helps avoid pointing visitors to the wrong destination.

Limits and formats

The tool follows a CNAME alias, but it does not check the content served at the final address.
A CNAME cannot coexist with certain other records at the same name, so a conflict can explain a missing result.
DNS propagation and caching can show an older target name after a change, so retest if needed.
Check the exact spelling of the target name, because a missing dot or subdomain changes the answer.

Where processing happens

The name you enter is sent to the YOORfree server, which queries public DNS itself and returns the CNAME target it finds. No file is uploaded; only the request needed to follow the alias is performed. You can repeat the lookup for each alias in the chain.

Frequently asked questions

What should I do if no CNAME is returned?

It can mean the name has no published CNAME alias, or that the record has not propagated yet. Check the DNS zone and the exact name before changing anything, then run the lookup again.

Does the result show the final website behind the alias?

No, the tool shows the DNS target of the alias. To learn whether the site responds, test the address or name that the CNAME points to separately, because DNS and web service checks are different.

Can I follow a chain of several CNAMEs?

The result shows the target returned by the query. If the chain has several steps, repeat the lookup on the target name to follow the alias to its end and confirm the final host.