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Website Availability Checker

Check if a website is online and monitor server status

language Website Availability Checker

Website URL

Enter the full URL including https:// or http://

Test with Popular Websites:

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About Website Availability:

This tool checks if a website is online by testing various connection types including HTTP/HTTPS, DNS resolution, and TCP connectivity. It also provides response time and server information.

help_outline Understanding Website Availability

What We Check

check_circle HTTP/HTTPS Connection - Tests if the web server responds
check_circle DNS Resolution - Checks if the domain resolves to an IP
check_circle TCP Connectivity - Verifies port 80/443 is accessible
check_circle Response Time - Measures server response speed
check_circle SSL Certificate - Validates HTTPS security (if applicable)

Common Issues

404 Not Found

The requested page or resource doesn't exist

Connection Timeout

Server is taking too long to respond

DNS Resolution Failed

Domain name cannot be resolved to an IP address

Response Time Benchmarks

speed Excellent

< 200ms

speed Good

200-500ms

speed Fair

500-1000ms

speed Poor

> 1000ms

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Monitoring Tips:

• Set up automated uptime monitoring for critical sites
• Check from multiple locations for accuracy
• Monitor response time trends over time
• Set up alerts for downtime notifications
• Regularly check SSL certificate expiration

http Common HTTP Status Codes

Success Codes (2xx)

200 OK Request successful

201 Created Resource created

204 No Content No content to return

Redirect Codes (3xx)

301 Moved Permanent redirect

302 Found Temporary redirect

304 Not Modified Cache hit

Error Codes (4xx/5xx)

404 Not Found Resource missing

500 Server Error Internal server error

503 Unavailable Service down