Test your site's availability from 4 probe locations, check response time, SSL certificate status, and HTTP details — instantly.
We test from 4 simulated probe locations in parallel and show detailed response times, SSL certificate status, and HTTP info.
Four parallel HTTP requests are sent from our server simulating different geographic probe locations.
4 concurrent requests are made using cURL multi to simulate different geographic regions.
Any 2xx or 3xx response is considered UP. 4xx/5xx or connection failure is flagged as DOWN.
For HTTPS sites, we inspect the SSL certificate expiry date and issuer without making an additional request.
DNS lookup time, SSL handshake, TTFB, and total response time are captured and displayed for each probe.