This tool monitors web server availability and alerts users when a 521 error occurs, indicating the server is not responding. It is designed for website owners and administrators who need to maintain uptime and quickly address server issues. Key features include: Real-time monitoring that continuously checks server connections to detect failures as they happen. Instant alerts that notify you via email or other channels when a 521 error is identified, allowing for rapid response. Detailed error logging that records timestamps and server statuses for troubleshooting and analysis. Visitor guidance that provides clear instructions for users during downtime, reducing confusion and frustration. Host communication support that helps owners contact their hosting providers with specific error details to expedite resolution. By focusing on proactive detection and clear communication, this tool helps keep websites operational and minimizes the impact of server outages.