GET

/#Action=CreateDefaultSubnet

http://ec2.{region}.amazonaws.com/#Action=CreateDefaultSubnet

Creates a default subnet with a size <code>/20</code> IPv4 CIDR block in the specified Availability Zone in your default VPC. You can have only one default subnet per Availability Zone. For more information, see <a href="https://docs.aws.amazon.com/vpc/latest/userguide/default-vpc.html#create-default-subnet">Creating a default subnet</a> in the <i>Amazon Virtual Private Cloud User Guide</i>.

Access Token Required: API Key

Query Params

AvailabilityZonestringrequired

The Availability Zone in which to create the default subnet.

DryRunboolean

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is <code>DryRunOperation</code>. Otherwise, it is <code>UnauthorizedOperation</code>.

Ipv6Nativeboolean

Indicates whether to create an IPv6 only subnet. If you already have a default subnet for this Availability Zone, you must delete it before you can create an IPv6 only subnet.

Actionstringrequired

Allowed:

Versionstringrequired

Allowed:

Responses

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

Language

CredentialsAPI KEY

API Key

Enter token below to save for later

cURL Request

1curl --request GET \
2     --url 'http://ec2.{region}.amazonaws.com/#Action=CreateDefaultSubnet' \
3     --header 'accept: application/json' \
4     --header 'content-type: application/json'

Response

1{
2  "success": true,
3  "data": {
4    "id": "abc123",
5    "created_at": "2025-01-01T00:00:00Z"
6  }
7}