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The Sinch US Short Code Onboarding Deck and the US Short Code Onboarding Overview documents describe the process for onboarding US short codes.

 

Helpful Industry Resources:

 

Provisioning Schedule:

The below table outlines the schedule and estimate timing for provisioning/migrating short codes (note this is from the time of carrier submission):

Operator

Provisioning Schedule

Estimate Timing

Verizon Wireless

Tuesday maintenance window

1-2 Weeks

AT&T Mobility

No set provisioning cycle

1-2 Weeks

T-Mobile & MetroPCS

No set provisioning cycle

1-2 Weeks

ClearSky

No set provisioning cycle

1-2 Weeks

US Cellular

No set provisioning cycle

1-2 Weeks

Google Voice

No set provisioning cycle

3-5 Weeks

Interop 

No set provisioning cycle

3-5 Weeks

 

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Last update:
‎02-27-2026 10:08 AM
Updated by: