Last value of Uptime on timeout


I can’t find anything about that on the internet, so, to be sure, I’m just asking here.
Which value I get of the Uptime service (from CheckMK), if the server (or whatever) is down? Do I get 0?

Because I have a dashboard with an drawio chart and want to implement an up&down feature. Currently I have implemented it with checking the last value of the uptime: base (red), >3000 (orange), >8000 (green). So, if the last uptime is at least 3s the server is probably up/starting.
However, this is based on the assumption that the last value of the uptime is 0 if the server can no longer be reached, otherwise >0.

Best regards,

Welcome @pjatswg

What is your datasource?

It’s checkmk.