ReleaseAddress - Amazon Elastic Compute Cloud


Releases the specified Elastic IP address.

[EC2-Classic, default VPC] Releasing an Elastic IP address automatically disassociates it from any instance that it's associated with. To disassociate an Elastic IP address without releasing it, use DisassociateAddress.


We are retiring EC2-Classic. We recommend that you migrate from EC2-Classic to a VPC. For more information, see Migrate from EC2-Classic to a VPC in the Amazon Elastic Compute Cloud User Guide.

[Nondefault VPC] You must use DisassociateAddress to disassociate the Elastic IP address before you can release it. Otherwise, Amazon EC2 returns an error (InvalidIPAddress.InUse).

After releasing an Elastic IP address, it is released to the IP address pool. Be sure to update your DNS records and any servers or devices that communicate with the address. If you attempt to release an Elastic IP address that you already released, you'll get an AuthFailure error if the address is already allocated to another AWS account.

[EC2-VPC] After you release an Elastic IP address for use in a VPC, you might be able to recover it. For more information, see AllocateAddress.

For more information, see Elastic IP Addresses in the Amazon Elastic Compute Cloud User Guide.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.


[EC2-VPC] The allocation ID. Required for EC2-VPC.

Type: String

Required: No


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 DryRunOperation. Otherwise, it is UnauthorizedOperation.

Type: Boolean

Required: No


The set of Availability Zones, Local Zones, or Wavelength Zones from which AWS advertises IP addresses.

If you provide an incorrect network border group, you receive an InvalidAddress.NotFound error.

You cannot use a network border group with EC2 Classic. If you attempt this operation on EC2 classic, you receive an InvalidParameterCombination error.

Type: String

Required: No


[EC2-Classic] The Elastic IP address. Required for EC2-Classic.

Type: String

Required: No

Response Elements

The following elements are returned by the service.


The ID of the request.

Type: String


Is true if the request succeeds, and an error otherwise.

Type: Boolean


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


Example for EC2-Classic

This example releases the specified Elastic IP address for EC2-Classic.

Sample Request &PublicIp= &AUTHPARAMS

Example for EC2-VPC

This example releases the specified Elastic IP address for EC2-VPC.

Sample Request &AllocationId=eipalloc-5723d13e &AUTHPARAMS

See Also

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