Practical guidance
Compare headers and DNS from several regions because CDNs may select edges by client location. Do not present a suspected origin address as established fact. Missing provider headers do not rule out CDN use.
Before using this tool
Define what you need from CDN locator and prepare the relevant input. When diagnosing a live service, record the test time and connection conditions so you can compare results after configuration changes. Check findings against the documentation for your software.
Tool availability
This is currently an information page. No working form, calculations or submission to diagnostic services is available yet. The interface and supported input formats will be documented when functionality is released.