tencent cloud



Last updated: 2023-08-18 14:27:58

1. API Description

Domain name for API request: ecm.tencentcloudapi.com.

This API is used to create a subnet. After the subnet is created successfully, it will become the default subnet for the AZ.

A maximum of 20 requests can be initiated per second for this API.

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: CreateSubnet.
Version Yes String Common Params. The value used for this API: 2019-07-19.
Region No String Common Params. This parameter is not required for this API.
VpcId Yes String ID of the VPC instance to be manipulated, which can be obtained from the VpcId field in the returned value of the DescribeVpcs API.
SubnetName Yes String Subnet name, which can contain up to 60 bytes.
CidrBlock Yes String Subnet IP address range. It must be within the VPC IP address range. Subnet IP address ranges cannot overlap with each other within the same VPC.
Zone Yes String AZ ID of the subnet. You can select different AZs for different subnets for cross-AZ disaster recovery.
EcmRegion Yes String ECM region
Tags.N No Array of Tag List of bound tags, such as [{"Key": "city", "Value": "shanghai"}].

3. Output Parameters

Parameter Name Type Description
Subnet Subnet Subnet object.
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Creating subnet

Input Example

&<Common request parameters>

Output Example

    "Response": {
        "Subnet": {
            "NetworkAclId": "",
            "RouteTableId": "",
            "VpcId": "vpc-ila64qtl",
            "EnableBroadcast": false,
            "Zone": "ap-hangzhou-ecm-1",
            "Ipv6CidrBlock": "",
            "Region": "ap-hangzhou-ecm",
            "SubnetName": "subnet_test",
            "AvailableIpAddressCount": 253,
            "IsRemoteVpcSnat": false,
            "SubnetId": "subnet-heaa1hzo",
            "InstanceCount": 0,
            "VpcCidrBlock": "",
            "TagSet": [
                    "Value": "hangzhou",
                    "Key": "city"
            "CreatedTime": "2020-08-14 10:38:40",
            "ZoneName": "Hangzhou Zone 1",
            "CidrBlock": "",
            "IsDefault": false,
            "VpcIpv6CidrBlock": ""
        "RequestId": "d0c21b3b-4c46-4ac3-a6ad-576303682731"

5. Developer Resources


TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
FailedOperation.InternalOperationFailure Internal error.
InvalidParameter.InvalidDataFormat The data format is incorrect.
InvalidParameterValue The parameter value is incorrect.
InvalidParameterValue.InvalidPublicParam The common parameter is invalid.
InvalidParameterValue.InvalidRegion The ECM region is invalid.
InvalidParameterValue.InvalidZone The zone is invalid.
InvalidParameterValue.Malformed The input parameter format is invalid.
InvalidParameterValue.SubnetConflict The specified CIDR block conflicts with another subnet in the same VPC.
InvalidParameterValue.SubnetRange The subnet IP range is invalid.
LimitExceeded The quota limit is exceeded.
ResourceNotFound The resource does not exist.
UnauthorizedOperation.ForbiddenOperation You don't have the permission to perform this operation.
UnsupportedOperation.VpcMismatch The resources are not in the same VPC.
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