As of around 11:20PM PST we began experiencing issues with an upstream voice provider for our telecom network. We have confirmed it is an identified issue that they are working to resolve, and have taken steps to reroute our own network to mitigate customer impact.  For the duration of this issue, customers may still experience intermittent inbound calling success.  Further update will be provided upon outage resolution.
-Matt, Nathan and Tim
Update 1:48AM – Our upstream reports that the issue is resolved, and we’re seeing the same. -Nathan