DNS & Email Tools
CNAME Lookup
Follow canonical name chains for any hostname.
Updated 2025-12-01
DNS Record Lookup
CNAME Lookup
Follow CNAME alias chains to their final destination. Detect CDN providers, circular references, and alias configurations.
Enter a hostname that may have CNAME aliases (often starts with www)
About CNAME Records
CNAME records (Canonical Name records) create aliases from one hostname to another. They are commonly used for:
- www subdomains – Point www.example.com to example.com
- CDN integration – Point assets.example.com to a CDN endpoint
- SaaS services – Point app.example.com to a service provider
- Load balancing – Abstract the actual server hostnames
Note: CNAME records cannot coexist with other record types at the same name (except DNSSEC records). A CNAME at the zone apex is generally not allowed.