Free CNAME Record Lookup
Look up CNAME records for any domain. Follows the full resolution chain, detects the hosting service (AWS, Cloudflare, Vercel, Shopify, etc.), and shows associated A/AAAA records.
About this tool
A CNAME (Canonical Name) record is one of the most important DNS record types. It's essentially an alias — it points one domain name to another, allowing you to use subdomains like blog.example.com or shop.example.com while the actual hosting is handled by a third-party service.
This tool looks up the CNAME record for any hostname, follows the resolution chain (CNAME → CNAME → final IP), and identifies the underlying service. Enter a subdomain to see if it's pointing to Cloudflare, AWS, Shopify, Vercel, or any other platform.
CNAME records are crucial for email authentication too. When you set up email marketing with services like Sequenzy, you'll add CNAME records for DKIM authentication. Our DKIM checker verifies these records are set up correctly, and our MX record lookup checks your mail server configuration.
For a broader view of your DNS setup, also check our SPF checker and DMARC checker to make sure your domain's email authentication is properly configured.
Frequently Asked Questions
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