System Status

This page offers API uptime information for TeleSign services, in addition to incident history reports and service issues alerts.
Operator Service Alert - Planned Maintenance - U.S. Cellular - 05/03/21
Scheduled Maintenance Report for TeleSign System Status
The scheduled maintenance has been completed.
Posted May 04, 2021 - 01:00 PDT
In progress
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted May 03, 2021 - 21:00 PDT
Issue: US Operator - U.S. Cellular Maintenance

Start Date: 05/03/21
Start Time: 09:00 PM PDT
End Date: 05/04/21
End Time: 01:00 AM PDT

We have received notification that US Operator U.S. Cellular will be performing planned maintenance on the date and time specified above. During this time period, customers with Dedicated Short Codes that send SMS messages to U.S. Cellular users may experience a temporary delay in message delivery, so we kindly ask that you plan accordingly. Other US operators will not be affected by this U.S. Cellular operator maintenance.

On behalf of the operator, we apologize for any inconvenience and appreciate your patience during this service window.

If you have any questions, please contact us at

Kind Regards,
TeleSign Support
Posted Apr 30, 2021 - 04:55 PDT
This scheduled maintenance affected: Operator Alerts.