It appears to only be affecting apps that have multiple dynos.
While Heroku is busy fixing the issue if you scale your app to a single dyno (assuming it can handle the traffic) it should restore availability.
While Heroku is busy fixing the issue if you scale your app to a single dyno (assuming it can handle the traffic) it should restore availability.
However, while I could not connect to my app, nobody I know could connect to my app, and my monitoring service could not connect to my app for a ping... my app logs showed that some traffic continued to connect throughout the outage. So it was not entirely universal. And was clearly a routing problem of some kind.