Dangling CNAME Checker
Check whether a hostname points at a target that no longer resolves, with extra attention to common SaaS target patterns associated with takeover risk.
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How to Read CNAME Chains Correctly
Learn how to read CNAME chains, understand alias targets step by step, and spot stale, looping, or takeover-prone CNAME configurations.
What Is a Dangling CNAME?
Learn what a dangling CNAME is, why it can create subdomain takeover risk, what patterns to look for, and how to clean up stale aliases safely.
How to Check Email Provider Setup for a Domain
A practical workflow for checking whether a domain's email provider setup looks like Google Workspace, Microsoft 365, or a mixed environment with extra gateways.
