Free Website Monitoring Tool
upsonar.io is a website monitoring service that checks your site's uptime, SSL certificates, DNS records, domain expiration, and every external dependency — from 9 locations across 3 continents.
Free plan available · No credit card required · Set up in 30 seconds
What We Monitor
Uptime Monitoring
HTTP/HTTPS checks from 9 global regions every 1-5 minutes. Detect outages before your users do.
Dependency Monitoring
Track every script, font, API, and CDN your page loads. Know when external services break your site.
SSL Certificate Monitoring
Track certificate expiration and validity. Get alerts 30, 14, and 7 days before expiry.
Domain Expiry Monitoring
WHOIS-based domain expiration tracking. Never lose a domain to missed renewal.
DNS Monitoring
Track DNS record changes (A, AAAA, CNAME, MX, NS, TXT). Detect hijacking instantly.
Try It Now — Free Website Health Check
Enter any URL to check uptime, SSL, and all external resources. No signup required.
upsonar vs Typical Monitoring Tools
| Feature | upsonar | Typical tools |
|---|---|---|
| Uptime checks | Every 1 min | Every 5 min |
| Check regions | 9 regions, 3 continents | 1-3 regions |
| Dependency monitoring | All external resources | Not available |
| SSL monitoring | Included | Separate tool |
| DNS monitoring | Included | Separate tool |
| Domain expiry | Included | Not available |
| Free plan | 3 websites | 1 website or none |
How Website Monitoring Works
1. Add your website: Enter your URL and choose what to monitor — uptime, SSL, DNS, domain, or all of the above. Takes 30 seconds.
2. We check continuously: Every 1-5 minutes, we send requests from 9 global regions. We check not just your server, but every resource your page loads — CDNs, fonts, scripts, APIs.
3. Get instant alerts: When something breaks, you're notified via email, Telegram, or webhook within minutes. We verify from multiple regions to prevent false alerts.
4. Track and resolve: Each outage creates an incident with full diagnostics — response times, status codes, failed resources. Acknowledge, investigate, and resolve from one dashboard.