Uptime and downtime with 99.99 % SLA

2022-11-14:As of today, uptime.is is powered by Python and Flask. For more than 10 years your uptime and downtime calculations have been served by newLISP. I will certainly miss it, but uptime.is just followed the @uptisbot Telegram bot.

[ simple / flexible / reverse / about / API ]

Agreed SLA level: % ( and hit the <enter> key)

SLA level of 99.99 % uptime/availability results in the following periods of allowed downtime/unavailability:

Direct link to the page with these results: uptime.is/99.99 (or uptime.is/four-nines)

The SLA calculations assume a requirement of continuous uptime (i.e. 24/7 all year long) with additional approximations as described in the source. (uptime.is was originally implemented in newLISP, which had powered uptime and downtime calculations for more than a decade. As of 2022-11-14 uptime.is is powered by Python and Flask, using the same stack as the @uptisbot Telegram bot.)

For convenience, there are special CEO and SEO friendly links for N nines: three nines, four nines, five nines, six nines etc.