SMS Delivery Failures to Telefonica O2 in Germany via Subset of Twilio Alphanumeric Sender ID's

Resolved

We have fully investigated the SMS delivery failures to Telefonica O2 in Germany via a subset of Twilio alphanumeric Sender ID's, and it was determined that the impact was limited to a small set of customers, who have been contacted individually to address any concerns. All systems are operational.

Investigating

We are experiencing SMS delivery failures to Telefonica O2 in Germany via a subset of Twilio alphanumeric sender ID's. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.