---
title: "Get OS version values for site"
type: reference
method: GET
path: /rest-api/site/{siteId}/targeting/operating-system/{osName}/versions.do
tag: "Targeting Rules"
---

# Get OS version values for site

`GET https://YOUR-NETWORK-DOMAIN/rest-api/site/{siteId}/targeting/operating-system/{osName}/versions.do`

Returns a JSON array of available version identifiers for the specified operating system. Each version can be used with the create OS targeting endpoint together with a relation operator (LOWER, GREATER, EQUAL, etc.) to target specific OS version ranges. The osName must be a valid OS name from the OS values endpoint. Requires UPDATE permission on the site and MANAGE_SUPPLY_PRE_TARGETING user permission.

## Path params

| Name | Type | Required | Example | Description |
|---|---|---|---|---|
| `siteId` | integer | yes | `3001` | Unique numeric ID of the site |
| `osName` | string | yes | `WINDOWS` | Operating system. Accepts enum name or integer ID for backward compatibility |

## Responses

- `200` — Success
- `400` — Bad request — invalid or missing parameters
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Site not found
- `500` — Internal server error

## Example request

```bash
curl --request GET \
  --url 'https://YOUR-NETWORK-DOMAIN/rest-api/site/3001/targeting/operating-system/WINDOWS/versions.do' \
  --header 'X-Api-Key: YOUR_API_KEY'
```

Source: https://epom.com/ad-server/docs/api/targeting-rules/get-site-targeting-operating-system-versions