---
title: "Read a zone's Open RTB categories"
type: reference
method: GET
path: /rest-api/zones/{zoneId}/openrtb.do
tag: "Categories"
---

# Read a zone's Open RTB categories

`GET https://YOUR-NETWORK-DOMAIN/rest-api/zones/{zoneId}/openrtb.do`

Returns the zone's Open RTB settings from the console's Open RTB card: the IAB categories sent for it in bid requests and the IAB categories whose ads it refuses. Needs the Open RTB permission and view rights on the zone's site.

## Path params

| Name | Type | Required | Example | Description |
|---|---|---|---|---|
| `zoneId` | integer | yes | `3001` | Zone id |

## Responses

- `200` — {zoneId, iabCategories:[{id, code, description}], blockedIabCategories:[…]}
- `400` — Bad request — invalid or missing parameters
- `401` — Authentication error
- `403` — The Open RTB permission is off, or no view rights on the zone's site
- `404` — The zone does not exist or is deleted

## Example request

```bash
curl --request GET \
  --url 'https://YOUR-NETWORK-DOMAIN/rest-api/zones/3001/openrtb.do' \
  --header 'X-Api-Key: YOUR_API_KEY'
```

Source: https://epom.com/ad-server/docs/api/categories/get-zones-openrtb