CNAME lookup
See whether a hostname is an alias, and which name it points at.
No account required to use this tool.
Reading the answer
- A CNAME says this name is another name. Resolvers follow it and use the target's records instead.
- Look up subdomains such as www or shop; a root domain can't have a CNAME.
- No result means the name has its own records (or doesn't exist), not that something is broken.
Every field and accepted value: the CNAME record explained. Other lookups: MX lookup, TXT record lookup, NS lookup, A record lookup.
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OpenFrequently asked questions
How do I check where a subdomain points?
Look up its CNAME. If there is one, it names the target; if not, look up its A record instead.
Can my root domain have a CNAME?
No, because the root also needs NS and SOA records and a CNAME can't share a name. Many DNS hosts offer CNAME flattening or an ALIAS record instead.
Why does a site's CNAME point to another CNAME?
Services like CDNs chain names so they can move traffic around. Resolvers follow up to several steps.
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