CreateSubnetCidrReservation - Amazon Elastic Compute Cloud
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Creates a subnet CIDR reservation. For information about subnet CIDR reservations, see Subnet CIDR reservations in the Amazon Virtual Private 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.


The IPv4 or IPV6 CIDR range to reserve.

Type: String

Required: Yes


The description to assign to the subnet CIDR reservation.

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 type of reservation.

The following are valid values:

  • prefix: The Amazon EC2 Prefix Delegation feature assigns the IP addresses to network interfaces that are associated with an instance. For information about Prefix Delegation, see Prefix Delegation for Amazon EC2 network interfaces in the Amazon Elastic Compute Cloud User Guide.

  • explicit: You manually assign the IP addresses to resources that reside in your subnet.

Type: String

Valid Values: prefix | explicit

Required: Yes


The ID of the subnet.

Type: String

Required: Yes


The tags to assign to the subnet CIDR reservation.

Type: Array of TagSpecification objects

Required: No

Response Elements

The following elements are returned by the service.


The ID of the request.

Type: String


Information about the created subnet CIDR reservation.

Type: SubnetCidrReservation object


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

See Also

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