DisassociateVpcCidrBlock - Amazon Elastic Compute Cloud


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).

Request Parameters

For more information about required and optional parameters that are common to all actions, see Common Query Parameters.


The association ID for the CIDR block.

Type: String

Required: Yes

Response Elements

The following elements are returned by the service.


Information about the IPv4 CIDR block association.

Type: VpcCidrBlockAssociation object


Information about the IPv6 CIDR block association.

Type: VpcIpv6CidrBlockAssociation object


The ID of the request.

Type: String


The ID of the VPC.

Type: String


For information about the errors that are common to all actions, see Common client error codes.



This example disassociates the IPv6 CIDR block from the VPC.

Sample Request

https://ec2.amazonaws.com/?Action=DisassociateVpcCidrBlock &AssociationId=vpc-cidr-assoc-e2a5408b &AUTHPARAMS

Sample Response

<DisassociateVpcCidrBlockResponse xmlns="http://ec2.amazonaws.com/doc/2016-11-15/"> <ipv6CidrBlockAssociation> <ipv6CidrBlock>2001:db8:1234:1a00::/56</ipv6CidrBlock> <ipv6CidrBlockState> <state>disassociating</state> </ipv6CidrBlockState> <associationId>vpc-cidr-assoc-e2a5408b</associationId> </ipv6CidrBlockAssociation> <vpcId>vpc-a034d6c4</vpcId> </DisassociateVpcCidrBlockResponse>

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: