# SMS Number Life Cycle Management

Reduce compliance risk and keep US SMS audiences current. Airship uses carrier data and the FCC's Reassigned Numbers Database to remove or suppress numbers that are no longer valid recipients.

Airship's number life cycle management includes default carrier deactivation monitoring for US SMS audiences. Today's release adds two optional services that provide FCC Reassigned Numbers Database (RND) verification:

* **Full audience RND scanning** — This is an ad hoc scan of a customer-defined SMS audience. Airship queries each phone number with its registered opt-in date to identify numbers reported as permanently disconnected or reassigned after consent.
* **Carrier deactivation RND scanning** — This adds an RND check to the default monitoring. Airship suppresses affected numbers during the check, then removes or restores them based on the result.

## Requirements and documentation

Both services require an order form add-on. Contact your Airship account manager to get set up.

For all the details, see [SMS Number Life Cycle Management](https://www.airship.com/docs/developer/api-integrations/sms/compliance/number-lifecycle/).