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SMS complianceReviewed September 7, 2026

What is A2P 10DLC?

10DLC means 10-digit long-code messaging and is one sanctioned route for non-consumer traffic identified by T-Mobile.

Who this applies to#

  • The cited route guidance is scoped to sanctioned T-Mobile traffic

What A2P 10DLC requires#

  • Entities sending sanctioned 10DLC traffic to T-Mobile must register before campaign delivery approval

What this does not require#

  • Registration is route-specific and the source does not establish a universal worldwide rule or fee schedule

Common mistakes#

  1. Generalizing one carrier's route rule worldwide
  2. Inventing fee or throughput tiers

A2P 10DLC checklist#

  • Name the carrier scope
  • Identify the route
  • Confirm registration before campaign approval

Commonly confused with#

OnVoard's take#

Keep 10DLC guidance carrier-scoped and avoid filling unsupported fee, throughput, or approval claims.

Official sources#