Website Uptime Monitoring
Monitor websites, APIs, and infrastructure from US, EU, and APAC. Know the moment something goes down — before your customers do.
Everything You Need for Reliable Uptime Monitoring
- 1-Minute Check Intervals
- Paid plans include checks as frequent as every 60 seconds so you catch issues fast. Free plans check every 10 minutes.
- HTTP/HTTPS Monitoring
- Send requests with custom headers, body, and authentication to match your exact API or website setup. Validate status codes and keywords.
- TCP Port Checks
- Check if any TCP port is open and accepting connections — databases, Redis, SMTP, SSH, and more.
- DNS Lookups
- Verify DNS records resolve correctly. Supports A, AAAA, CNAME, MX, TXT, NS, SOA, and SRV record types.
- Ping/ICMP
- Test basic host reachability with ICMP ping. Ideal for bare-metal servers, network equipment, and IoT devices.
- Heartbeat/Cron
- Your service pings a unique URL on a schedule. If a ping is missed, we alert you. Perfect for cron jobs and background workers.
How Uptime Monitoring Works
1
Add Your URL
Enter your website or API endpoint. Configure check interval, expected status code, and optional keywords.
2
We Monitor 24/7 from Multiple Regions
Webalert pings your site from the US, EU, and APAC at the interval you choose. Every check is logged with response time.
3
Get Alerted Instantly
If something goes wrong, you're notified via Slack, email, SMS, or webhook — within seconds. Downtime is confirmed from multiple regions.
What Webalert uptime monitoring is — and is not
We probe your public URL, port, DNS record, or heartbeat from US, EU, and APAC. A second region confirms before we page you. That is the product: outside-in availability, not a browser recorder and not real-user analytics.
Leaving a suite? Read the Pingdom alternative if you paid for transactions and RUM, or the UptimeRobot alternative if the five-minute free interval is the problem. Need a one-off check first? Use the website down checker — free, no signup.
- When should I use 1-minute vs 10-minute checks?
- Use 10 minutes on the free plan for side projects. Use 1-minute paid checks for checkout, auth, and anything you page humans on.
- Does uptime monitoring include SSL expiry?
- Yes — every HTTPS monitor includes SSL certificate monitoring. You do not add a separate SSL SKU.
Related Features
Free Uptime Monitor
Start with 3 free monitors, 10-minute checks, and Slack + email alerts. No credit card required.
SSL Certificate Monitoring
Get alerts before your SSL certificates expire. Automatic detection and configurable reminders.
Public Status Pages
Give your customers a branded status page with real-time updates and custom domain support.
Start monitoring uptime in under a minute
Free forever plan with 3 monitors. No credit card required. Set up in under 2 minutes.
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How to Calculate Website Uptime (And Why 99% Isn't Enough)
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