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Free tool

Is it down or is it me?

We check whether your domain responds from our server, right now.

We check from a single point: our server. If it responds here that doesn't guarantee it responds to you; if it doesn't respond, it might be blocking our range, not actually be down.

How to check if a website is down?

Website downtime can stem from DNS issues, perimeter firewall rules, web server crashes (Nginx/Apache), or exhausted system resources (CPU/RAM spikes).

SecuryBlack runs real-time HTTP(S) requests to measure initial time to first byte (TTFB) and validate SSL/TLS certificate integrity.

Uptime FAQs

What does a 502 Bad Gateway error mean?

It indicates the reverse proxy is active, but the backend application service (Node.js, Docker container, PHP-FPM) failed to respond or stopped running.

How can I prevent unnoticed downtime on production servers?

Deploy lightweight telemetry agents like SecuryBlack OxiPulse, which monitors system resources and vital processes before crashes happen.

We told you because you asked

Want us to tell you next time, before an angry customer does? Free uptime monitoring for 1 server.