> ## Documentation Index
> Fetch the complete documentation index at: https://vida.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Check SIP registration AOR availability

> Validate whether an Address of Record (AOR) is free for the authenticated account.



## OpenAPI

````yaml post /api/v2/sip/registration/available
openapi: 3.0.0
info:
  version: 2.0.0
  title: Vida API
  description: Vida API Documentation
servers:
  - url: https://api.vida.dev
    description: Vida Production
    variables:
      baseUrl:
        default: api.vida.dev
        description: Production API Root
security: []
paths:
  /api/v2/sip/registration/available:
    post:
      tags:
        - SIP
      summary: Check SIP registration AOR availability
      description: >-
        Validate whether an Address of Record (AOR) is free for the
        authenticated account.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                aor:
                  description: Full SIP AOR to validate
                  type: string
                  example: 1001@sip.example.com
                username:
                  description: Username portion used to build the AOR when aor is omitted
                  type: string
                  example: '1001'
                sipRealm:
                  description: SIP realm combined with username to build the AOR
                  type: string
                  example: sip.example.com
      responses:
        '200':
          description: Availability response
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  available:
                    type: boolean
                    example: true
                  message:
                    type: string
                    example: AOR is available
        '400':
          description: Missing AOR details
        '401':
          description: Unauthorized Request
        '500':
          description: Server error while checking availability
      security:
        - apiKeyAuth: []
components:
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: query
      name: token
      description: Vida API Token

````