sinch-imported-numbers-hosting-orders

To import and text-enable external phone numbers, you submit a hosting order with numbers formatted in E.164. This handles single imports or bulk orders of up to five numbers, including qualification checks, LOA workflows, and asynchronous status tracking.

Yes, E.164 formatting is required for bulk hosting orders. All US and CA numbers submitted for single imports or batches of five or fewer must be in E.164 format to successfully process text-enablement and hosting order requests.

The LOA workflow generates and sends Letters of Authorization using direct, reseller, or blanket variants to verify ownership. After tracking signatures, text-enablement requests are submitted and monitored asynchronously to complete SMS provisioning.

Yes, you can configure a callbackUrl to asynchronously monitor hosting order status and retrieve per-number results. Optional HMAC signature verification can be enabled to validate incoming callback payloads for secure provisioning updates.

The maximum batch size for bulk hosting orders is five numbers or fewer per request. Single imports are also supported for US and CA numbers, with asynchronous status polling available to track qualification and text-enablement progress.

Yes, toll-free variants are supported for text-enablement of imported numbers. You can submit US and CA toll-free numbers through the hosting order workflow, including LOA management and asynchronous provisioning status monitoring.