> 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/bmc/cidr-block/inquirypricecreateipv4block.md).

# InquiryPriceCreateIpv4Block

## 1. API Description

This API (InquiryPriceCreateIpv4Block) is used to query the price of creating IPv4 CIDR blocks.

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type                                                               | Description                                                                                                                                                            |
| -------------- | -------- | ------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| zoneId         | Yes      | String                                                             | Zone ID to which the CIDR blocks belong.                                                                                                                               |
| chargeType     | Yes      | [ChargeType](/api-reference/bmc/datastructure.md#chargetype)       | <p>CIDR block pricing model .</p><p>PREPAID: subscription POSTPAID: pay-as-you-go</p>                                                                                  |
| netmask        | Yes      | Integer                                                            | <p>Netmasks you want to purchase.</p><p>You can find the available netmasks in the response by calling DescribeAvailableIpv4Resource .</p><p>Value range: \[1, 32]</p> |
| cidrType       | No       | [CidrBlockType](/api-reference/bmc/datastructure.md#cidrblocktype) | <p>CIDR block type.</p><p>Default value: BGP</p>                                                                                                                       |
| chargePrepaid  | No       | [ChargePrepaid](/api-reference/bmc/datastructure.md#chargeprepaid) | Details of the monthly subscription, including the purchase period, auto-renewal. It is required if the `chargeType` is `PREPAID`.                                     |
| amount         | No       | Integer                                                            | <p>Quantity of IPv4 CIDR blocks you want to purchase.</p><p>Default value: 1.</p><p>Value range: \[1, +)</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> |
| price          | [PriceItem](/api-reference/bmc/datastructure.md#priceitem) | Price of IPv4 CIDR blocks.                                                                                            |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
Query the price of a postpaid IPv4 CIDR block with the netmask of `28` in `CHI-A`. The quantity you want to purchase is `1`.

```json
POST /api/v2/bmc HTTP/1.1
Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: InquiryPriceCreateIpv4Block
<Common Request Params>

Request:
{
  "zoneId": "CHI-A",
  "chargeType": "POSTPAID",
  "netmask": 28
}

Response:
{
  "requestId": "TCB52F216-374D-4895-AF29-A3E29E5403E2",
  "response": {
    "requestId": "TCB52F216-374D-4895-AF29-A3E29E5403E2",
    "price": {
      "discount": 100.0,
      "discountPrice": null,
      "originalPrice": null,
      "unitPrice": 0.06,
      "discountUnitPrice": 0.06,
      "chargeUnit": "HOUR",
      "stepPrices": null
    }
  }
}
```

{% 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                           |
| ---------------- | --------------------------------------- | ------------------------------------- |
| 403              | OPERATION\_DENIED\_UNAVAILABLE\_NETMASK | The specified netmask is unavailable. |
| 404              | INVALID\_ZONE\_NOT\_FOUND               | Zone not found.                       |