# Create Subnet - CreateSubnet

## Overview

Create Subnet






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `CreateSubnet`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.zosoc.com/uaccount/api_manage)                                             | **Yes** |
| **Signature**  | string  | User signature generated based on public key and API command, see [Signature Algorithm](/docs/api/summary/signature.md)  | **Yes** |

### Request Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Region** | string | Region. See [List of Regions and Availability Zones](/docs/api/summary/regionlist) |**Yes**|
| **ProjectId** | string | Project ID. If not filled in, the default project is used, sub-accounts must be filled in. Please refer to the [GetProjectList interface](/docs/api/summary/get_project_list). |No|
| **VPCId** | string | VPC Resource ID |**Yes**|
| **Subnet** | string | Subnet network address, for example 192.168.0.0 |**Yes**|
| **Netmask** | int | Number of subnet network digits, default is 24 |No|
| **SubnetName** | string | Subnet name, default is Subnet |No|
| **Tag** | string | Business group name, default is Default |No|
| **Remark** | string | Note |No|
| **AssociateIPv6** | boolean | Associate with IPv6? |No|
| **VPCIPv6Network** | string | The IPv6 segment of the associated UVPC, optional. If not specified, one will be selected from the UVPC IPv6 segment for allocation by default. |No|
| **IPv6Network** | string | IPv6 Subnet |No|

### Response Field

| Field Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **RetCode** | int | Return status code. If it is 0, it means successful return. If it is not 0, it means failure. |**Yes**|
| **Action** | string | Operation command name. |**Yes**|
| **Message** | string | Returns an error message, providing detailed description when `RetCode` is non-zero. |No|
| **SubnetId** | string | Subnet ID |No|
| **IPv6Network** | string | IPv6 Subnet |No|




## Example

### Request Example
    
```
https://api.zosoc.com/?Action=CreateSubnet
&ProjectId=org-XXXXX
&Region=cn-sh2
&VPCId=vnet-XXXX
&Subnet=10.1.1.0
&Netmask=24
&SubnetName=test
&Tag=test
&Remark=test
&BusinessId=test
&AssociateIPv6=false
&VPCIPv6Network=LuSMSbvL
&IPv6Network=RlhEukRF
```

### Response Example
    
```json
{
  "Action": "CreateSubnetResponse",
  "IPv6Network": "hmwsFfZU",
  "RetCode": 0,
  "SubnetId": "subnet-XXXXX"
}
```