I got this from Bandwidth earlier this afternoon. Might be related:
Inbound Calling to Canada
Incident Report for Bandwidth
New Incident Status: Identified
Bandwidth’s vendor has identified the source of impairment within their network and are working towards a resolution.
Aug 17, 12:03 EDT
Investigating
Bandwidth is currently working with our Canadian based vendor to investigate inbound calling to Canadian Numbers.
Aug 17, 11:22 EDT
This incident affects: Inbound Calling Services (Inbound Calling (SIP)).


On Fri, Aug 17, 2018 at 3:31 PM, Will Duquette <willd@staff.gwi.net> wrote:
Has anyone had issues reported over the last few weeks from customers with inbound calls in the Northeast reporting the following:

1. Long call setup
2. No ring back or very delayed ring back (Post Dial Delay)
3. Delayed audio in calls.  Persons on each end maybe talking over each other. 
4. Multiple call logs showing up for a single call in logs. 

We have been engaging multiple providers (CCI, Spectrum, Windstream and Onvoy) and have been making some progress but are looking to see if anyone else is experiencing the same issues. 

Thanks,

--
Will Duquette
Network Engineer II
GWI

Office:   207-602-1228
Cell:      207-590-2084
Fax:      207-282-5036