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Cloudflare-aware monitoring

Monitoring that understands Cloudflare

Cloudflare sits between your visitors and your server, so a plain check can be fooled in both directions. We tell a challenge from an outage, and an origin error from a Cloudflare one.

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Live check of uptime.rs

Up: uptime.rs answers

Status code
200
Response time
269 ms
Server
nginx
Cloudflare
No
Page title
Uptime monitoring every minute, from multiple locations · uptime.rs
Checked
0 seconds ago

Live right now

27,979sites monitored
1,559,325checks in the last 24 hours
6check locations
60days of history

Cloudflare-aware monitoring

Challenged, not down

When Cloudflare's bot protection or "Under Attack" mode answers our checks with a challenge, the monitor shows challenged in orange and does not alert you.

Origin errors explained

520 to 526 and 530 mean Cloudflare could not reach your server. The monitor page says which, and what to check.

Tunnel error 1033

When a Cloudflare Tunnel is down (error 1033), the alert and the monitor page say so, with how to restart cloudflared.

Cloudflare detection and import

Monitors show when a site is behind Cloudflare, and you can import every domain from a Cloudflare account in one step.

How it works

  1. Create an accountPick a username; it becomes your status page address.
  2. Add your sitesPaste a list or import from your panel or DNS provider.
  3. RelaxWe check every minute and tell you the moment something is really down.

Questions

Why does my site show "challenged"?

Cloudflare answered our check with a challenge page. Allow our check IPs in Cloudflare, or lower the security level for them, to get real checks.

What is Cloudflare error 1033?

The Cloudflare Tunnel to your server is not connected. Restart cloudflared on the server.

Read the docs →

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