Certificate Transparency Uptime Alerts

This is a little service that makes it possible to set up alerting for endpoint_uptime_24h.csv.

e.g. https://uptime.geomys.org/ct/24h/geomys.org will return a 503 if any lines matching "geomys.org" have an uptime column below 99.5.

You can use it with any filter string, and it also takes a parameter like ?threshold=98. You're welcome to use our instance, but no guarantees!

We recommend setting up alerting such that the endpoint is checked from multiple locations, and you are only alerted if all locations hit 503s for more than 15 minutes.

There is also a witness monitoring service at https://uptime.geomys.org/witness/.