# AllocatedSubnet

CIDR Allocated Subnet.

- Source: [`aws-ec2/lib/ip-addresses.ts`](https://github.com/aws/aws-cdk/blob/v2.274.0/packages/aws-cdk-lib/aws-ec2/lib/ip-addresses.ts#L207)
- Type last changed: v2.121.0 · 12 Jan 2024

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_ec2 as ec2 } from 'aws-cdk-lib';
const allocatedSubnet: ec2.AllocatedSubnet = {
  cidr: 'cidr',

  // the properties below are optional
  ipv6Cidr: 'ipv6Cidr',
};
```

## Properties

- `cidr`: string (required) — IPv4 CIDR Allocations for a Subnet.

  Note this is specific to the IPv4 CIDR.

- `ipv6Cidr`: string — IPv6 CIDR Allocations for a Subnet.

  **Default:** no IPV6 CIDR

  Note this is specific to the IPv6 CIDR.