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

# Device ID from IMEI

> Resolves a device IMEI to vehicle ID and name.

### Overview

Resolves a device IMEI to the vehicle ID and display name for vehicles the caller may access.

<Note>The V1 version of this endpoint is [Lookup by IMEI](/v1/api-reference/get-device-id-by-imei).</Note>

<Note>**Rate limit:** 10 req/s · 60/min · 6,000/hr · 144,000/day</Note>

### Endpoint

`GET /v2/api/vehicles/{imei}/device-ids`

### Path parameters

<ParamField path="imei" type="string" required>
  Device IMEI (digits only, as stored in Telemax).
</ParamField>

### Response

**200 OK** — `ImeiSearchResultDto`

| Field       | Type    | Description          |
| ----------- | ------- | -------------------- |
| vehicleId   | integer | Vehicle ID           |
| vehicleName | string  | Vehicle display name |

### Example response

```json theme={null}
{
  "vehicleId": 88421,
  "vehicleName": "Delivery Van 07"
}
```

### Error responses

| Status | Meaning                                       |
| ------ | --------------------------------------------- |
| 401    | Vehicle not accessible with the current token |
| 404    | IMEI not found                                |

```bash theme={null}
curl "https://api.telemax.com.au/v2/api/vehicles/353148090123456/device-ids" \
  -H "Authorization: Bearer <token>"
```


## OpenAPI

````yaml openapi.yaml GET /v2/api/vehicles/{imei}/device-ids
openapi: 3.1.0
info:
  title: Telemax External API (V2)
  version: '2026-04-14'
  description: >
    Telemax External API — fleet telemetry, vehicle commands, and integrations.


    **Base URL:** `https://api.telemax.com.au`


    **Authentication:** All routes require a `Bearer` JWT unless marked
    `[AllowAnonymous]`.

    Obtain tokens via `POST /v2/api/authentication/token/api-key`.


    **RESTful architecture:** V2 uses standard HTTP methods (GET, POST, PUT,
    DELETE) with

    resource-based routes and consistent pagination via `page` and `pageSize`
    query parameters.


    **API versioning:** All responses will include an `X-API-Version` header
    containing the

    date-based version string (e.g. `2026-04-28`). See the
    [Changelog](/v2/changelog) for

    the deprecation policy and version history.


    For full documentation including error handling, pagination, and known field
    quirks, see [docs.telemax.com.au](https://docs.telemax.com.au).
servers:
  - url: https://api.telemax.com.au
security:
  - BearerAuth: []
paths:
  /v2/api/vehicles/{imei}/device-ids:
    get:
      summary: Device ID from IMEI (V2)
      description: Resolves a device IMEI to vehicle ID and name.
      parameters:
        - name: imei
          in: path
          required: true
          schema:
            type: string
          example: '353148090123456'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              example:
                vehicleId: 88421
                vehicleName: Delivery Van 07
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          description: >-
            **404 Not Found** — IMEI does not exist or is not accessible with
            this token.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
              example:
                type: RESOURCE
                code: NOT_FOUND
                description: Vehicle was not found.
                requestId: 0HNLTALNU4DDE:00000004
                docUrl: https://docs.telemax.com.au/errors/not-found
        '429':
          $ref: '#/components/responses/TooManyRequests'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  responses:
    Unauthorized:
      description: >
        **401 Unauthorized** — JWT is missing, expired, or malformed.

        The JWT bearer middleware rejects the request before it reaches the
        controller.
      headers:
        X-RateLimit-Limit:
          $ref: '#/components/headers/X-RateLimit-Limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/X-RateLimit-Remaining'
        X-RateLimit-Reset:
          $ref: '#/components/headers/X-RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
          example:
            type: AUTHENTICATION
            code: INVALID_CREDENTIALS
            description: The provided API key is invalid or does not exist.
            requestId: 0HNLTALNU4DCO:00000004
            docUrl: https://docs.telemax.com.au/errors/invalid-credentials
    TooManyRequests:
      description: >
        **429 Too Many Requests** — Rate limit exceeded. Check the Retry-After
        header for the number of seconds to wait before retrying.

        Use exponential backoff: wait Retry-After seconds, then double the
        interval on each subsequent 429.
      headers:
        X-RateLimit-Limit:
          $ref: '#/components/headers/X-RateLimit-Limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/X-RateLimit-Remaining'
        X-RateLimit-Reset:
          $ref: '#/components/headers/X-RateLimit-Reset'
        Retry-After:
          $ref: '#/components/headers/Retry-After'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
          example:
            type: RATE_LIMIT
            code: RATE_LIMIT_EXCEEDED
            description: Too many requests. Please slow down.
            requestId: req_6d2f8b4a
            docUrl: https://docs.telemax.com.au/errors/rate-limit-exceeded
    InternalServerError:
      description: >
        **500 Internal Server Error** — An unexpected error occurred. Include
        the requestId when contacting support.
      headers:
        X-RateLimit-Limit:
          $ref: '#/components/headers/X-RateLimit-Limit'
        X-RateLimit-Remaining:
          $ref: '#/components/headers/X-RateLimit-Remaining'
        X-RateLimit-Reset:
          $ref: '#/components/headers/X-RateLimit-Reset'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
          example:
            type: SERVER_ERROR
            code: INTERNAL_SERVER_ERROR
            description: An unexpected error occurred. Please try again later.
            requestId: req_1e5a3c7d
            docUrl: https://docs.telemax.com.au/errors/internal-server-error
  schemas:
    ApiError:
      type: object
      description: Standard error response returned by all API endpoints.
      properties:
        type:
          type: string
          description: >-
            Error category (e.g. AUTHENTICATION, AUTHORIZATION, RESOURCE,
            VALIDATION_ERROR, RATE_LIMIT, SERVER_ERROR).
          example: AUTHENTICATION
        code:
          type: string
          description: Machine-readable error code within the category.
          example: INVALID_CREDENTIALS
        description:
          type: string
          description: Human-readable explanation of the error and how to resolve it.
          example: The provided API key is invalid or does not exist.
        requestId:
          type: string
          description: Unique request identifier for support correlation.
          example: req_7f3a2b1c
        docUrl:
          type: string
          format: uri
          description: Link to the relevant error documentation page.
          example: https://docs.telemax.com.au/errors/invalid-credentials
      required:
        - type
        - code
        - description
  headers:
    X-RateLimit-Limit:
      description: >-
        Maximum number of requests allowed per minute for this token. **Not yet
        active** — this header will be added once the rate-limit middleware is
        deployed. See the [Changelog](/v2/changelog) for the rollout date.
      schema:
        type: integer
        example: 60
    X-RateLimit-Remaining:
      description: >-
        Number of requests remaining in the current rate limit window. **Not yet
        active** — see `X-RateLimit-Limit`.
      schema:
        type: integer
        example: 47
    X-RateLimit-Reset:
      description: >-
        Unix timestamp (seconds) at which the current rate limit window resets.
        **Not yet active** — see `X-RateLimit-Limit`.
      schema:
        type: integer
        example: 1746000060
    Retry-After:
      description: Number of seconds to wait before retrying after a 429 response.
      schema:
        type: integer
        example: 30
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >
        JWT Bearer token obtained from `POST
        /v2/api/authentication/token/api-key`.


        **Lifetime:** ~24 hours (86,399 seconds). Cache the token and reuse it.
        Re-authenticate 5 minutes before expiry.


        **Scoping:** API key tokens are scoped to the company the key belongs to
        and may restrict

        access to a vehicle allowlist and/or action set (see token claims).


        **No refresh endpoint** — re-authenticate with your API key when the
        token expires.

````