About This Tool
Check known FDSN web services. This page allows you to run a single test against all registered FDSN data centers.
This runs tests from within the browser using JavaScript fetch requests. If a server is not configured to allow cross-origin queries (CORS), the request will fail. See the Wikipedia article, Mozilla documentation, and W3C specification for more information.
Check the browser's JavaScript console for additional debugging information, especially for CORS errors. Tests stop on the first failure within each type.
Disclaimer: Results may include false positives/negatives. Different browsers may produce different results. These tests represent my reading of the FDSN Web Service Specification.
Click Run to execute a test across all data centers. Results appear below. You can also run multiple tests against a single data center.
Available Tests
Results
Select a test and click Run to see results across all data centers.