DNS Protocol Library
CNAME Record Lookup Tool
Perform a free online CNAME lookup to identify domain aliases, canonical names, and redirect configurations. Detect dangling DNS records.
Query Live CNAME Records
Perform a real-time network request to fetch active CNAME mappings for any target domain.
Open Diagnostic ConsoleWhat is a DNS CNAME Record?
A Canonical Name (CNAME) record creates an alias pointing one domain or subdomain to another target hostname, simplifying DNS management when mapping alias nodes.
RFC Zone File Example Format
In standard zone files, a CNAME record is declared using the following syntax structure:
www.example.com. 3600 IN CNAME example.com.CLI Terminal Query Example
Verify this record type locally using standard terminal debugging tools:
dig www.example.com CNAME