My .io has been up and down about 25 times in the last 15 hours. The downtime has been about 1.0 - 2.5 minutes each occasion, with a down period of 1 hour 48 minutes at the start.

The latter downtimes look planned, as they are for exact periods (1 minute 0 seconds, 1 minute 30 seconds, 2 minutes 30 seconds, etc)

Here's an extract from the log with timing incase anyone's interested: https://gist.github.com/anonymous/ed37826bc66c23d6c791