# DescribeInstanceAvailableEipResources

## 1. API Description

This API (DescribeInstanceAvailableEipResources) is used to query list of elastic IPs that can be bound to an instance.

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type   | Description                                                                                                                  |
| -------------- | -------- | ------ | ---------------------------------------------------------------------------------------------------------------------------- |
| instanceId     | Yes      | String | <p>Instance ID.</p><p>To obtain the instance ID, you can call DescribeInstances and look for instanceId in the response.</p> |

## 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> |
| instanceEipResources | Array of [InstanceAvailableEip](/api-reference/compute/bmc/datastructure.md#instanceavailableeip) | List of available elastic IPs that can be bound to an instance.                                                       |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Query list of elastic IPs that can be bound to an instance**

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

Request：
{
    "instanceId": "instanceId1"
}

Response：
{
  "requestId": "T05992D0C-7E8B-4047-B0C0-780F2CD549D3",
  "response": { 
    "requestId": "T05992D0C-7E8B-4047-B0C0-780F2CD549D3"，
    "instanceEipResources": [
        {
             "eipId": "eipId1",
             "ipAddress: "xx.x.x.x"
        }
    ]
  }
}
```

{% 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 |
| ---------------- | ---------- | ----------- |


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