Website Availability Checker
Check if your website is reachable from multiple regions around the world.
Monitoring regions
Enter a URL above to check availability
Regions
2
Why check website availability from multiple regions?
A website can appear perfectly healthy from one location while users in another part of the world experience timeouts, DNS failures, or CDN misconfigurations. Regional outages are more common than full-site downtime - and much harder to detect without multi-region monitoring.
This free tool sends real HTTP requests from servers in Europe and the United States simultaneously, so you can compare status codes and response times side by side. If one region shows degraded performance or a different HTTP status, you have immediate evidence of a geo-specific issue - whether it is a routing problem, an edge cache misconfiguration, or a regional provider outage.
What this tool checks
HTTP status code
Verifies your site returns the expected status, not just that it responds to connections.
Response time
Measures how long the full HTTP request takes from each region, in milliseconds.
Multi-region reach
Requests are sent from EU and US servers in parallel to surface location-specific issues.
Real-time results
Every check is a live request - no cached data, no stale results. What you see is what your users get right now.
When a one-time check is not enough
A single check tells you what is happening right now, but websites go down unpredictably - at 2 AM, during traffic spikes, or after a deployment. Continuous monitoring checks your site every minute, catches issues within seconds, and sends alerts through email, Slack, Telegram, or webhooks so you can respond before users are affected.
Sentinelboard provides automated website availability monitoring with 1-minute check intervals, response time tracking, uptime history, and multi-channel alerting - all from a single dashboard.