SignalWire Incoming Phone Numbers API

openapi: 3.2.0
info:
  title: Compatibility Incoming Phone Numbers API
  version: 1.0.0
  description: Manage phone numbers in your project.
servers:
- url: https://{space_name}.signalwire.com/api/laml/2010-04-01
  description: SignalWire Compatibility API
  variables:
    space_name:
      default: YOUR_SPACE
      description: Your SignalWire Space name
security:
- SignalWireBasicAuth: []
tags:
- name: Incoming Phone Numbers
  description: Manage phone numbers in your project.
  externalDocs:
    url: https://signalwire.com/docs/compatibility-api/rest
    description: Developer documentation on the Compatibility REST API
paths:
  /Accounts/{AccountSid}/IncomingPhoneNumbers:
    get:
      operationId: list_incoming_phone_numbers
      summary: List all Incoming Phone Numbers
      description: 'List all incoming phone numbers.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Numbers_.


        [Learn more about API scopes](/docs/platform/your-signalwire-api-space).'
      parameters:
      - $ref: '#/components/parameters/IncomingPhoneNumbersAccountSidPath'
      - name: Page
        in: query
        required: false
        description: The page index to retrieve. Zero-indexed.
        schema:
          type: integer
          format: int32
          minimum: 0
          default: 0
        explode: false
      - name: PageSize
        in: query
        required: false
        description: The number of results per page. Default is 50, maximum is 1000.
        schema:
          type: integer
          format: int32
          minimum: 1
          maximum: 1000
          default: 50
        explode: false
      - name: PageToken
        in: query
        required: false
        description: Token for cursor-based pagination. Required when Page > 0.
        schema:
          type: string
        explode: false
      - name: PhoneNumber
        in: query
        required: false
        description: Only show numbers that match this pattern.
        schema:
          type: string
        explode: false
      - name: FriendlyName
        in: query
        required: false
        description: Only show numbers with this friendly name.
        schema:
          type: string
        explode: false
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IncomingPhoneNumberListResponse'
        '400':
          description: The request was invalid or cannot be processed. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '401':
          description: Authentication failed. Please verify your credentials and try again.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '422':
          description: The request could not be processed due to validation errors. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
      tags:
      - Incoming Phone Numbers
    post:
      operationId: create_incoming_phone_number
      summary: Create an Incoming Phone Number
      description: 'Purchase and provision a new incoming phone number.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Numbers_.


        [Learn more about API scopes](/docs/platform/your-signalwire-api-space).'
      parameters:
      - $ref: '#/components/parameters/IncomingPhoneNumbersAccountSidPath'
      responses:
        '201':
          description: Response returned when an incoming phone number is created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IncomingPhoneNumber'
        '400':
          description: The request was invalid or cannot be processed. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '401':
          description: Authentication failed. Please verify your credentials and try again.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '422':
          description: The request could not be processed due to validation errors. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
      tags:
      - Incoming Phone Numbers
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/CreateIncomingPhoneNumberRequest'
  /Accounts/{AccountSid}/IncomingPhoneNumbers/{Sid}:
    get:
      operationId: retrieve_incoming_phone_number
      summary: Retrieve an incoming phone number
      description: 'Retrieve an incoming phone number.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Numbers_.


        [Learn more about API scopes](/docs/platform/your-signalwire-api-space).'
      parameters:
      - $ref: '#/components/parameters/IncomingPhoneNumbersAccountSidPath'
      - $ref: '#/components/parameters/IncomingPhoneNumberSidPath'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IncomingPhoneNumberResponse'
        '400':
          description: The request was invalid or cannot be processed. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '401':
          description: Authentication failed. Please verify your credentials and try again.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '404':
          description: The requested resource was not found. Please verify the resource identifier.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
      tags:
      - Incoming Phone Numbers
    post:
      operationId: update_incoming_phone_number
      summary: Update an incoming phone number
      description: 'Update an incoming phone number.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Numbers_.


        [Learn more about API scopes](/docs/platform/your-signalwire-api-space).'
      parameters:
      - $ref: '#/components/parameters/IncomingPhoneNumbersAccountSidPath'
      - $ref: '#/components/parameters/IncomingPhoneNumberSidPath'
      responses:
        '200':
          description: The request has succeeded.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IncomingPhoneNumberResponse'
        '400':
          description: The request was invalid or cannot be processed. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '401':
          description: Authentication failed. Please verify your credentials and try again.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '404':
          description: The requested resource was not found. Please verify the resource identifier.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '422':
          description: The request could not be processed due to validation errors. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
      tags:
      - Incoming Phone Numbers
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/UpdateIncomingPhoneNumberRequest'
    delete:
      operationId: delete_incoming_phone_number
      summary: Delete an incoming phone number
      description: 'Release an incoming phone number. The number will be removed from your account.


        Note: Numbers cannot be released within a cooldown period after purchase.


        #### Permissions


        The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Numbers_.


        [Learn more about API scopes](/docs/platform/your-signalwire-api-space).'
      parameters:
      - $ref: '#/components/parameters/IncomingPhoneNumbersAccountSidPath'
      - $ref: '#/components/parameters/IncomingPhoneNumberSidPath'
      responses:
        '204':
          description: 204 No Content response.
        '400':
          description: The request was invalid or cannot be processed. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '401':
          description: Authentication failed. Please verify your credentials and try again.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '404':
          description: The requested resource was not found. Please verify the resource identifier.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '409':
          description: The request conflicts with the current state of the resource. The operation cannot be completed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
        '422':
          description: The request could not be processed due to validation errors. Check the error details for more information.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CompatibilityErrorResponse'
      tags:
      - Incoming Phone Numbers
webhooks:
  incomingCallStatusCallback:
    post:
      operationId: incoming_call_status_callback
      summary: Incoming call status callback
      description: 'Payload sent by SignalWire to your Inbound Call Status Callback URL for inbound calls to a phone number.


        Configure `StatusCallback` at the phone number level via the dashboard

        (**Phone Numbers** → select a number → **Phone Number Settings**) or programmatically via the

        [create](/docs/compatibility-api/rest/incoming-phone-numbers/create-incoming-phone-number) or

        [update](/docs/compatibility-api/rest/incoming-phone-numbers/update-incoming-phone-number) Incoming Phone Number API endpoints.


        By default, the webhook fires only when the call is `completed` or `failed`, making it well-suited

        for tracking inbound call success rate, call quality, and total call volume in a call center context.


        Status callbacks are advisory, best-effort notifications — delivery can be delayed or fail silently, so don''t gate time-critical actions on receiving one. See [Status callback reliability](/docs/platform/webhooks#status-callback-reliability).'
      parameters: []
      responses:
        '200':
          description: Webhook received
      tags:
      - Incoming Phone Numbers
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InboundCallStatusCallbackPayload'
      security:
      - {}
components:
  schemas:
    CreateIncomingPhoneNumberRequest:
      type: object
      required:
      - PhoneNumber
      properties:
        PhoneNumber:
          type: string
          minLength: 6
          maxLength: 18
          pattern: ^\+\d{5,17}$
          description: The phone number to purchase in E.164 format. Must start with `+` followed by 5-17 digits.
          examples:
          - '+13103386745'
        FriendlyName:
          type: string
          description: A friendly name for the phone number. If not provided, the formatted phone number will be used.
          examples:
          - My Business Line
        SmsApplicationSid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for the application associated with SMS handling on this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472sa
        SmsFallbackMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to `SmsFallbackUrl` is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        SmsFallbackUrl:
          type: string
          format: uri
          description: The URL to request if errors occur when fetching SmsUrl.
          examples:
          - https://example.com/sms-fallback
        SmsMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to SmsUrl is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        SmsUrl:
          type: string
          format: uri
          description: The URL to request when an incoming SMS is received.
          examples:
          - https://example.com/sms
        StatusCallback:
          type: string
          format: uri
          description: The URL to request to pass status updates to. See the [Incoming call status callback](/docs/compatibility-api/rest/incoming-phone-numbers/webhooks/incoming-call-status-callback) webhook for the payload your URL will receive.
          examples:
          - https://example.com/status
        StatusCallbackMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to StatusCallback is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        VoiceApplicationSid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for the application associated with call handling on this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472va
        VoiceFallbackMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to VoiceFallbackUrl is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        VoiceFallbackUrl:
          type: string
          format: uri
          description: The URL to request if errors occur when fetching VoiceUrl.
          examples:
          - https://example.com/voice-fallback
        VoiceMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to VoiceUrl is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        VoiceReceiveMode:
          type: string
          enum:
          - voice
          - fax
          description: Whether this number can receive voice calls or faxes. Default is `voice`.
          examples:
          - voice
          default: voice
        VoiceUrl:
          type: string
          format: uri
          description: The URL to request when an incoming call is received.
          examples:
          - https://example.com/voice
      unevaluatedProperties:
        not: {}
      description: Request body for creating an incoming phone number.
    IncomingPhoneNumberCapabilities:
      type: object
      required:
      - voice
      - sms
      - mms
      - fax
      properties:
        voice:
          type: boolean
          description: Whether or not voice is enabled.
          examples:
          - true
        sms:
          type: boolean
          description: Whether or not SMS is enabled.
          examples:
          - true
        mms:
          type: boolean
          description: Whether or not MMS is enabled.
          examples:
          - true
        fax:
          type: boolean
          description: Whether or not fax is enabled.
          examples:
          - true
      unevaluatedProperties:
        not: {}
      description: Phone number capabilities.
    uuid:
      type: string
      format: uuid
      description: Universal Unique Identifier.
    UpdateIncomingPhoneNumberRequest:
      type: object
      properties:
        AccountSid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for an account to which the number should be transferred. Must be within the same Space.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472ac
        EmergencyAddressSid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier of the address associated with E911 for this phone number. Not supported for toll-free numbers or certain providers.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472ad
        FriendlyName:
          type: string
          minLength: 1
          maxLength: 255
          description: A friendly name for the phone number.
          examples:
          - My Business Line
        SmsApplicationSid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for the application associated with SMS handling on this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472sa
        SmsFallbackMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to `SmsFallbackUrl` is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        SmsFallbackUrl:
          type: string
          format: uri
          description: The URL to request if errors occur when fetching SmsUrl.
          examples:
          - https://example.com/sms-fallback
        SmsMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to SmsUrl is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        SmsUrl:
          type: string
          format: uri
          description: The URL to request when an incoming SMS is received.
          examples:
          - https://example.com/sms
        StatusCallback:
          type: string
          format: uri
          description: The URL to request to pass status updates to.
          examples:
          - https://example.com/status
        StatusCallbackMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to StatusCallback is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        VoiceApplicationSid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for the application associated with call handling on this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472va
        VoiceFallbackMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to VoiceFallbackUrl is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        VoiceFallbackUrl:
          type: string
          format: uri
          description: The URL to request if errors occur when fetching VoiceUrl.
          examples:
          - https://example.com/voice-fallback
        VoiceMethod:
          type: string
          enum:
          - GET
          - POST
          description: Whether the request to VoiceUrl is a `GET` or a `POST`. Default is `POST`.
          examples:
          - POST
          default: POST
        VoiceReceiveMode:
          type: string
          enum:
          - voice
          - fax
          description: Whether this number can receive voice calls or faxes.
          examples:
          - voice
        VoiceUrl:
          type: string
          format: uri
          description: The URL to request when an incoming call is received.
          examples:
          - https://example.com/voice
      unevaluatedProperties:
        not: {}
      description: Request body for updating an incoming phone number.
    InboundCallStatusCallbackPayload:
      type: object
      required:
      - CallSid
      - AccountSid
      - From
      - To
      - Timestamp
      - CallStatus
      - CallDuration
      - AudioInMos
      properties:
        CallSid:
          type: string
          description: A unique identifier for the call. May be used to later retrieve this call from the REST API.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472ca
        AccountSid:
          type: string
          description: The unique ID of the project this call is associated with.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472af
        From:
          type: string
          description: The From number in E.164 format.
          examples:
          - '+15551234567'
        To:
          type: string
          description: The To number in E.164 format.
          examples:
          - '+18005559876'
        Timestamp:
          type: string
          description: The timestamp of the call creation date/time.
          examples:
          - Thu, 04 Apr 2024 18:32:15 +0000
        CallStatus:
          type: string
          enum:
          - failed
          - completed
          description: The status of the call. For this callback, the value will be either `failed` or `completed`.
          examples:
          - completed
        CallDuration:
          type: string
          description: The duration, in seconds, of the call.
          examples:
          - '142'
        AudioInMos:
          type: string
          description: A mean opinion score on a scale of 1–5 that represents the quality of the call.
          examples:
          - '4.5'
      unevaluatedProperties:
        not: {}
    AddressRequirements:
      type: string
      enum:
      - none
      - any
      - local
      - foreign
      description: Address requirements.
    CompatibilityErrorResponse:
      type: object
      required:
      - code
      - message
      - more_info
      - status
      properties:
        code:
          type: integer
          format: int32
          description: Error code.
          examples:
          - 20003
        message:
          type: string
          description: Error message.
          examples:
          - Authentication failed
        more_info:
          type: string
          description: URL for more information about the error.
          examples:
          - https://signalwire.com/docs/compatibility-api/reference/errors
        status:
          type: integer
          format: int32
          description: HTTP status code.
          examples:
          - 401
      unevaluatedProperties:
        not: {}
      description: Error response model.
    IncomingPhoneNumberListResponse:
      type: object
      required:
      - uri
      - first_page_uri
      - next_page_uri
      - previous_page_uri
      - page
      - page_size
      - incoming_phone_numbers
      properties:
        uri:
          type: string
          description: The URI of the current page.
          examples:
          - /api/laml/2010-04-01/Accounts/b3877c40-da60-4998-90ad-b792e98472af/IncomingPhoneNumbers?Page=0&PageSize=50
        first_page_uri:
          type: string
          description: The URI of the first page.
          examples:
          - /api/laml/2010-04-01/Accounts/b3877c40-da60-4998-90ad-b792e98472af/IncomingPhoneNumbers?Page=0&PageSize=50
        next_page_uri:
          anyOf:
          - type: string
          - type: 'null'
          description: The URI of the next page, or null if there are no more pages.
          examples:
          - /api/laml/2010-04-01/Accounts/b3877c40-da60-4998-90ad-b792e98472af/IncomingPhoneNumbers?Page=1&PageSize=50&PageToken=PAb3877c40da604998
        previous_page_uri:
          anyOf:
          - type: string
          - type: 'null'
          description: The URI of the previous page, or null if this is the first page.
          examples:
          - null
        page:
          type: integer
          format: int32
          description: The current page number.
          examples:
          - 0
        page_size:
          type: integer
          format: int32
          description: The number of items per page.
          examples:
          - 50
        incoming_phone_numbers:
          type: array
          items:
            $ref: '#/components/schemas/IncomingPhoneNumber'
          description: List of incoming phone numbers.
      unevaluatedProperties:
        not: {}
      description: Response containing a list of incoming phone numbers.
    PhoneNumberOrigin:
      type: string
      enum:
      - signalwire
      - hosted
      description: Phone number origin.
    IncomingPhoneNumberResponse:
      type: object
      required:
      - account_id
      - account_sid
      - address_requirements
      - address_sid
      - api_version
      - beta
      - capabilities
      - country_code
      - date_created
      - date_updated
      - emergency_address_sid
      - emergency_status
      - friendly_name
      - identity_sid
      - origin
      - phone_number
      - sid
      - sms_application_sid
      - sms_fallback_method
      - sms_fallback_url
      - sms_method
      - sms_url
      - status_callback
      - status_callback_method
      - trunk_sid
      - uri
      - voice_application_sid
      - voice_caller_id_lookup
      - voice_fallback_method
      - voice_fallback_url
      - voice_method
      - voice_url
      properties:
        account_id:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for the account that is associated with this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472ac
        account_sid:
          allOf:
          - $ref: '#/components/schemas/uuid'
          description: The unique identifier for the account that is associated with this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472ac
        address_requirements:
          allOf:
          - $ref: '#/components/schemas/AddressRequirements'
          description: Whether or not a registered address with SignalWire is required. Always 'none'.
        address_sid:
          anyOf:
          - type: string
          - type: 'null'
          description: The unique identifier for the address associated with this phone number. Always null.
          examples:
          - null
        api_version:
          type: string
          description: The version of the SignalWire API.
          examples:
          - '2010-04-01'
        beta:
          type: boolean
          description: New numbers on SignalWire are marked as beta. Always false.
          examples:
          - false
        capabilities:
          allOf:
          - $ref: '#/components/schemas/IncomingPhoneNumberCapabilities'
          description: Whether or not a number can receive calls and messages.
        country_code:
          type: string
          description: The ISO 3166-1 alpha-2 country code for this phone number.
          examples:
          - US
        date_created:
          type: string
          description: The date, in RFC 2822 format, this phone number was created.
          examples:
          - Tue, 25 Sept 2018 23:00:00 +0000
        date_updated:
          type: string
          description: The date, in RFC 2822 format, this phone number was updated.
          examples:
          - Wed, 26 Sept 2018 22:00:00 +0000
        emergency_address_sid:
          anyOf:
          - type: string
          - type: 'null'
          description: The unique identifier of the address associated with E911 for this phone number, or null if not set.
          examples:
          - null
        emergency_status:
          type: string
          description: Whether the phone route has an active E911 address associated. 'Active' or 'Inactive'.
          examples:
          - Inactive
        friendly_name:
          type: string
          description: A formatted version of the number.
          examples:
          - (310) 338-6745
        identity_sid:
          anyOf:
          - type: string
          - type: 'null'
          description: The unique identifier for the identity associated with this phone number. Always null.
          examples:
          - null
        origin:
          allOf:
          - $ref: '#/components/schemas/PhoneNumberOrigin'
          description: The origin of the phone number.
        phone_number:
          type: string
          description: The incoming number in E.164 format.
          examples:
          - '+13103386745'
        sid:
          type: string
          description: The unique identifier for this phone number.
          examples:
          - b3877c40-da60-4998-90ad-b792e98472pn
        sms_application_sid:
          anyOf:
          - type: string
          - type: 'null'
          description: The unique identifier for the application associated with SMS handling on this phone number, or null if not set.
          examples:
          - null
        sms_fallback_method:
          type: string
          description: Whether the request to `SmsFallbackUrl` is a `GET` or a `POST`.
          examples:
          - POST
        sms_fallback_url:
          anyOf:
          - type: string
          - type: 'null'
          description: The URL to request if errors occur when fetching SmsUrl, or null if not set.
          examples:
          - null
        sms_method:
          type: string
          description: Whether the request to SmsUrl is a `GET` or a `POST`.
          examples:
          - POST
        sms_url:
          anyOf:
          - type: string
          - type: 'null'
          description: The URL to request when an incoming SMS is received, or null if not set.
          examples:
          - null
        status_callback:
          anyOf:
          - type: string
          - type: 'null'
          description: The URL to request to pass status updates to, or null if not set.
          examples:
          - null
        status_callback_method:
          type: string
          description: Whether the request to StatusCallback is a `GET` or a `POST`.
          examples:
          - POST
        trunk_sid:
          anyOf:
          - type: string
          - type: 'null'
          description: The unique identifier for the Trunk associated with this phone number. Always null.
          examples:
          - null
        uri:
          type: string
          description: The URI for this number.
          examples:
          - /api/laml/2010-04-01/Accounts/b3877c40-da60-4998-90ad-b792e98472ac/IncomingPhoneNumbers/b3877c40-da60-4998-90ad-b792e98472pn.json
        verification_status:
          type: string
          description: The verification status for toll-free numbers. Only present for toll-free numbers.
          examples:
          - Unverified
        voice_application_sid:
          anyOf:
          - type: string
          - type: 'null'
          description: The unique identifier f

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# Full source: https://raw.githubusercontent.com/api-evangelist/signalwire/refs/heads/main/openapi/signalwire-incoming-phone-numbers-api-openapi.yml