CNAME Lookup
Find the canonical name (CNAME) record and full alias chain for any host name.
Continue your work
- DNS Propagation Checker — Check whether a new CNAME has spread worldwide.
- DNS Lookup — See the other records for the same name.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the CNAME Lookup
Find the canonical name (CNAME) record and full alias chain for any host name.
- 1 Enter a host name such as www.example.com or shop.example.com.
- 2 Click Find CNAME to follow each alias until a name with its own addresses is reached.
- 3 Read the chain to confirm the alias points where your hosting, CDN or SaaS provider asked.
Example and practical tips
Checking www.github.com shows it is a CNAME for github.com, followed by github.com’s IP address. A missing CNAME for shop.example.com after setting up a store means the record has not been added or has not spread yet.
Frequently asked questions
What is a CNAME record?
A canonical name record makes one host name an alias of another. Visitors to the alias are sent to wherever the target name points.
Can the root domain have a CNAME?
Not in standard DNS, because the root must also hold SOA and NS records. Many DNS hosts offer ALIAS, ANAME or CNAME flattening to get the same effect.
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