CNAME Record Lookup
Free CNAME lookup. See what a hostname aliases to - common for DKIM, tracking domains and ESP setup. Instant DNS lookup, no login required.
About the CNAME Record Lookup
This free CNAME lookup shows what a hostname is aliased to. CNAME records point one name at another, and they are common in email setup - many ESPs ask you to create CNAMEs for DKIM signing, tracking domains and bounce handling.
Enter a hostname to see its CNAME target and confirm your ESP or DKIM delegation is set up correctly.
Frequently asked questions
What is a CNAME record?
A CNAME (Canonical Name) record aliases one hostname to another. Requests for the alias resolve to the target's records. It is widely used for email tracking and DKIM delegation.
Why does my ESP ask for CNAME records?
ESPs use CNAMEs to delegate DKIM signing and tracking to their infrastructure while keeping your domain in the visible address, which improves alignment and trust.
Can the root domain have a CNAME?
Traditionally no - the root (apex) cannot have a CNAME alongside other required records. Subdomains can. Some providers offer CNAME-flattening as a workaround.
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