Zinn® UptimeGuides
How outages are confirmed
Why an alert from Zinn® Uptime means the site really is down, and how quickly you hear about it.
A check fails
The page timed out, its name did not resolve, the connection was refused, its certificate could not be verified, it answered with an error status, or the expected text was missing.
We check again at once
The failed address is requested again straight away with a fresh request, which is usually served from a different location. If that request succeeds, the failure is set aside.
Two confirmed failures make an outage
When confirmed failures happen on two checks in a row, the address is marked Down and the alert is sent. On one-minute checks that is about two minutes after the site fails.
Recovery is announced, not assumed
When the address answers again it is marked Up and a recovery message is sent, saying roughly how long it was down.
What does not count as down
A bot-protection challenge is not counted as down. And if a large share of checks fail at the same moment, we treat that as a problem on our side and record nothing, rather than alerting everyone.
Host the site with us too
Zinn® Uptime lives in the same account as Zinn Digital® Hosting: one login, one bill, and the sites you host with us sit right beside the ones you watch. Hosting comes with a 99.9% monthly availability guarantee, credited in one click if we miss it.
Monitoring and domain watching are free on every Zinn Digital® account, hosting or not.