AWS SDK Version 3 for .NET
API Reference

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Associates a CIDR block with your VPC. You can associate a secondary IPv4 CIDR block, or you can associate an Amazon-provided IPv6 CIDR block. The IPv6 CIDR block size is fixed at /56.

For more information about associating CIDR blocks with your VPC and applicable restrictions, see VPC and Subnet Sizing in the Amazon Virtual Private Cloud User Guide.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to AssociateVpcCidrBlockAsync.

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public virtual AssociateVpcCidrBlockResponse AssociateVpcCidrBlock(
         AssociateVpcCidrBlockRequest request
Type: Amazon.EC2.Model.AssociateVpcCidrBlockRequest

Container for the necessary parameters to execute the AssociateVpcCidrBlock service method.

Return Value
The response from the AssociateVpcCidrBlock service method, as returned by EC2.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also