What is Uptime ?

For almost every company listed in z3w.com you will find the values of their "Uptime" and "Speed Rank"

Uptime index showns the time percentage that each server has been available (reachable) from our control servers over a time period.

That way, 100% Uptime for a server would means that it has been fully reachable over the last 30 days.

Uptime is calculated from the availability to each particular server, always from homeland connections (ADSL and Cable modem), so it could be affected by external factors, like phisical
distance from our control points to each monitored server.

UNDER NO CIRCUMSTANCE neither Uptime nor any of the tools, comments, reviews or articles published in this website pretends to be an indication for the quality of any company listed and of course, they don't reflect a recommendation for buying or not any of their services.  

Uptime shows only the results observed at the control points in which monitoring services are installed, and may not be the same results that can be observed from any other points.