Resolved -
Twilio has seen a recovery of service and message deliveries are returning to normal.
Jul 15, 12:20 PDT
Update -
Twilio is continuing to work on this issue, the next update is expected in 2 hours or as soon as more information becomes available.
Jul 15, 11:21 PDT
Identified -
Twilio has reported SMS Delivery Delays from a Subset of Twilio Long Codes to AT&T United States. They have identified the cause and expect an update in the next hour.
Jul 15, 10:59 PDT