> 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/compute/zec/elastic-ip/availablelanip.md).

# AvailableLanIp

## 1. API Description

This API (AvailableLanIp) is used to query a list of NIC/IP pairs (within the same subnet) that are eligible to be associated with the specified EIP.

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type   | Description                                                                                                                                                                                           |
| -------------- | -------- | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| eipId          | Yes      | String | <p>ID of the elastic IP to check association eligibility for.</p><p>Only vNICs whose subnet is within the same region as this EIP will be returned.</p><p>To obtain an EIP ID, call DescribeEips.</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> |
| lanIps         | Array of [PrivateIpInfo](/api-reference/compute/zec/datastructure.md#privateipinfo) | List of NIC/IP pairs (within the same subnet) that are eligible to be associated with the specified EIP.              |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Obtain available private IP.**

<pre class="language-json"><code class="lang-json"><strong>POST /api/v2/zec HTTP/1.1
</strong>Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: AvailableLanIp


Request:
{
  "eipId": "xxx"
}

Response:
{
  "requestId": "TBFC01FCF-6439-4530-ADBC-16809F0C3E8F",
  "response": {
    "requestId": "TBFC01FCF-6439-4530-ADBC-16809F0C3E8F",
    "lanIps": [
      {
        "lanIp": "xxx",
        "nicId": "xxx",
        "nicName": "xxx",
        "instanceId": "xxx",
        "instanceName": "xxx"
      }
    ]
  }
}
</code></pre>

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