diff --git a/Build/build-speedtest-domainset.ts b/Build/build-speedtest-domainset.ts
index ec511c30..84f4885f 100644
--- a/Build/build-speedtest-domainset.ts
+++ b/Build/build-speedtest-domainset.ts
@@ -179,7 +179,9 @@ export const buildSpeedtestDomainSet = task(import.meta.path, async (span) => {
     // librespeed
     '.backend.librespeed.org',
     // Apple,
-    'mensura.cdn-apple.com' // From netQuality command
+    'mensura.cdn-apple.com', // From netQuality command
+    // OpenSpeedtest
+    'open.cachefly.net'
   ]);
 
   await span.traceChildAsync(