The incident has been resolved and SMS delivery from a subset of Twilio Phone Numbers to multiple networks in multiple countries, including Egypt, Trinidad and Tobago, Suriname, and Somalia is operating normally.
We have fully investigated the SMS Delivery Failures in Mongolia issue, 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.
We are no longer experiencing SMS delivery delays and failures from Twilio to Vietnamobile network subscribers in Vietnam. This incident has been resolved.
We are no longer experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States. This incident has been resolved.