Sprint has confirmed that it’s experiencing problems in Kentucky:
We are aware of impacts to service in parts of Kentucky in which customers may be unable to access voice and some data services. This appears to be an issue caused by a local exchange provider and our network team is working with the provider to restore service to impacted customers as quickly as possible. We apologize for any inconvenience. h/t gizmodo
The current outage is affecting Verizon, Sprint, and AT&T users.