---
title: "List phone numbers attached to the assistant"
method: GET
path: "/v1alpha1/project/{projectID}/phone-numbers"
tags: ["EnvironmentPublicApi", "Public-Docs"]
---

# List phone numbers attached to the assistant

`GET /v1alpha1/project/{projectID}/phone-numbers`

List all phone numbers attached to the target assistant. Optionally filter to a single environment by passing `environmentIDorAlias`.

## Path parameters

- `projectID` string, required

## Query parameters

- `environmentIDorAlias` string

## Response `200`

The phone numbers attached to the assistant.

- ProjectPhoneNumber[]
  - `id` string, required
  - `name` string, required
  - `provider` 'twilio' | 'vonage' | 'telnyx' | 'voiceflow-telnyx' | 'voiceflow-sip' | 'byo-sip', required
  - `createdAt` string, required
  - `updatedAt` string, required
  - `phoneNumber` string, required
  - `workspaceID` string, required
  - `assistantID` string, nullable, required
  - `environmentID` string, nullable, required
  - `versionVariant` 'draft' | 'published', required
  - `projectEnvironmentID` string, nullable, required
  - `providerPhoneNumberID` string, required
  - `environmentAlias` string, nullable, required

---

[API](https://skmtc.dev/voiceflow/apis/general-runtime.md) · [All operations](https://skmtc.dev/voiceflow/apis/general-runtime/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/voiceflow/general-runtime/revisions/6b1c4f778c56/schema)