Check any API or website from 6 AWS regions at once: status code, full response-time breakdown, headers and SSL expiry.
Enter any URL and LoadFocus runs a real HTTP request to it from six AWS regions at the same time. For each region you get the HTTP status code, the total response time, and a breakdown of where that time went: DNS lookup, TCP connect, TLS handshake, time to first byte and download. For HTTPS endpoints it also reports the SSL certificate validity and days to expiry.
A single check from one location hides the truth: your API can be fast from the US and slow from Asia. Checking from six regions at once shows real-world latency for a global audience and surfaces regional routing or CDN problems a single-location tool can never see.
A 2xx status code means the endpoint responded successfully; 4xx/5xx indicate client or server errors. In the timing breakdown, a high TLS time points to certificate or handshake overhead, a high time-to-first-byte points to slow server processing, and a high download time points to a large response. Compare regions to spot where users are underserved.
This tool gives you a snapshot. To know the moment your API goes down, slows past a threshold, or its SSL certificate is about to expire, turn the same URL into a continuous monitor on the LoadFocus free plan, with 1-minute checks from 25+ regions with email, Slack, Microsoft Teams and webhook alerts.
Related: API Monitoring · SSL Checker · UptimeRobot alternative
Your status check surfaces several values. The ones that tell you whether your endpoint is healthy and fast:
Whether the endpoint responded, and how. 2xx means success, 4xx is a client error (bad request, auth, missing route), 5xx is a server error. Anything other than 2xx means real users or integrations are hitting a failure.
End-to-end time for the request. For a JSON API, good is under 300 ms and excellent is under 100 ms. For a full web page, aim for under 1 second. Slow responses lose conversions and time out integrations.
How quickly your server starts responding. Good: under 800 ms. A slow TTFB caps how fast everything downstream can be and usually points to slow server processing or a cold backend.
The cost of setting up the connection before any data flows. High DNS time points to a slow or misconfigured resolver, not your server. High TLS time points to certificate chain or handshake overhead, often fixable with HTTP/2 and session resumption.
Days until your HTTPS certificate expires. An expired certificate breaks every browser and API client instantly, so this is the one number worth alerting on weeks ahead. Good: more than 30 days, and never let it reach single digits unattended.
The gap between your fastest and slowest region is your real global experience. A fast US number means little to a user in Singapore if the request takes several times longer there. A CDN, edge caching, or a multi-region deployment closes that gap.