> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/api-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/api-reference/zlb/location/describeloadbalancerregions.md).

# DescribeLoadBalancerRegions

## 1. API Description

This API (DescribeLoadBalancerRegions) is used to query the regions supporting the creating of load balancers.

## 2. Input Parameters

The following request parameter list only provides API request parameters.

None

## 3. Output Parameters

| Parameter Name | Type                                                          | Description                                                                                                           |
| -------------- | ------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- |
| requestId      | String                                                        | <p>The unique request ID, which is returned for each request.</p><p>RequestId is required for locating a problem.</p> |
| regions        | Array of [Region](/api-reference/zlb/datastructure.md#region) | List of regions.                                                                                                      |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Query regions where load balancers are available.**

```json
POST /api/v2/zlb HTTP/1.1
Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: DescribeLoadBalancerRegions
<Common Request Params>

Request：
{}

Response：
{
  "requestId": "TD30F6C8D-81E9-441A-B74A-B2A8D6732C3C",
  "response": {
    "regions": [
      {
        "regionId": "asia-east-1",
        "cityName": "Shanghai",
        "cityCode": "SHA"
      }
    ],
    "requestId": "TD30F6C8D-81E9-441A-B74A-B2A8D6732C3C"
  }
}
```

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](/api-reference/api-introduction/toolkit/api-sdk.md)，to make it easier for you to call APIs. More programming languages will be supported.

## 6. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see [Common Error Codes](/api-reference/api-introduction/instruction/commonerrorcode.md).

| HTTP Status Code | Error Code | Description |
| ---------------- | ---------- | ----------- |