We check whether your domain responds from our server, right now.
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.
It indicates the reverse proxy is active, but the backend application service (Node.js, Docker container, PHP-FPM) failed to respond or stopped running.
Deploy lightweight telemetry agents like SecuryBlack OxiPulse, which monitors system resources and vital processes before crashes happen.
Want us to tell you next time, before an angry customer does? Free uptime monitoring for 1 server.