AWS SDK Version 3 for .NET
API Reference

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Disassociates a CIDR block from a VPC. To disassociate the CIDR block, you must specify its association ID. You can get the association ID by using DescribeVpcs. You must detach or delete all gateways and resources that are associated with the CIDR block before you can disassociate it.

You cannot disassociate the CIDR block with which you originally created the VPC (the primary CIDR block).


For .NET Core this operation is only available in asynchronous form. Please refer to DisassociateVpcCidrBlockAsync.

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


public virtual DisassociateVpcCidrBlockResponse DisassociateVpcCidrBlock(
         DisassociateVpcCidrBlockRequest request


Type: Amazon.EC2.Model.DisassociateVpcCidrBlockRequest

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

Return Value

The response from the DisassociateVpcCidrBlock service method, as returned by EC2.

Version Information

.NET Framework:
Supported in: 4.5 and newer, 3.5

See Also