CNAME Lookup Tool
This CNAME Lookup Tool checks canonical alias mapping for domains and subdomains.
About This Tool
The CNAME Lookup Tool checks canonical name records that map one domain or subdomain to another.
CNAME records are commonly used for subdomain routing, CDN configuration, and domain aliasing.
Use this tool to verify correct alias configuration and troubleshoot redirection or routing problems.
Frequently Asked Questions – CNAME Lookup
FAQs for CNAME Tool
A CNAME (Canonical Name) record maps one domain or subdomain to another domain name. It acts as an alias instead of pointing directly to an IP address.
When should I use a CNAME record?
CNAME records are commonly used for:
Subdomain routing (blog.example.com)
CDN integration
SaaS platform verification
Domain alias configuration
Can a root domain use a CNAME record?
No. The root domain (example.com) typically cannot use a CNAME record because it conflicts with other required DNS records like NS and SOA.
Why is my CNAME record not working?
Possible reasons include:
DNS propagation delay
Incorrect target domain
Missing trailing dot in some DNS panels
Conflict with A records
How long does it take for CNAME changes to update?
CNAME changes usually propagate globally within minutes to 48 hours depending on DNS TTL settings and resolver caching.
