This incident has been resolved.

Our carrier partner has identified the issue and deployed a fix. Calls are now completing.

Our carrier partner is observing minor inbound call failures
towards phone numbers in european countries. A small percentage of phone numbers may experience call failures.

We're actively working with our carrier partner to get this issue resolved as soon as possible.

Please contact Plivo Support for any questions.
Support portal: https://support.plivo.com/support/home