If you're seeing this page, your browser successfully validated our SSL certificate. This tool reports back what else might be interfering with your connection so we can fix the experience for users on your network/device.
Tests whether known adblock-intercepted resources load. If any probe fails, an adblocker or HTTPS-filtering app is active on this device/network.
Fetches a known asset and compares its SHA-256 to the expected value baked into this page. A mismatch means a content-modifying intermediary (some ad-blockers, carrier filters, or proxies) rewrote the response.
Detects known signatures of apps and browser features that perform HTTPS interception (AdGuard, Brave Shields, service workers, custom user-CAs).
crossbordercab.com diagnostic v1 · No data is sent automatically. Tap the button above to share.