Amazon Elastic Compute Cloud
API Reference (API Version 2015-10-01)


Describes one or more of the Reserved Instances that you purchased.

For more information about Reserved Instances, see Reserved Instances in the Amazon Elastic Compute Cloud User Guide.

Request Parameters

For information about the common parameters that all actions use, see Common Query Parameters.


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


One or more filters.

  • availability-zone - The Availability Zone where the Reserved Instance can be used.

  • duration - The duration of the Reserved Instance (one year or three years), in seconds (31536000 | 94608000).

  • end - The time when the Reserved Instance expires (for example, 2015-08-07T11:54:42.000Z).

  • fixed-price - The purchase price of the Reserved Instance (for example, 9800.0).

  • instance-type - The instance type that is covered by the reservation.

  • product-description - The Reserved Instance product platform description. Instances that include (Amazon VPC) in the product platform description will only be displayed to EC2-Classic account holders and are for use with Amazon VPC (Linux/UNIX | Linux/UNIX (Amazon VPC) | SUSE Linux | SUSE Linux (Amazon VPC) | Red Hat Enterprise Linux | Red Hat Enterprise Linux (Amazon VPC) | Windows | Windows (Amazon VPC) | Windows with SQL Server Standard | Windows with SQL Server Standard (Amazon VPC) | Windows with SQL Server Web | Windows with SQL Server Web (Amazon VPC) | Windows with SQL Server Enterprise | Windows with SQL Server Enterprise (Amazon VPC)).

  • reserved-instances-id - The ID of the Reserved Instance.

  • start - The time at which the Reserved Instance purchase request was placed (for example, 2014-08-07T11:54:42.000Z).

  • state - The state of the Reserved Instance (payment-pending | active | payment-failed | retired).

  • tag:key=value - The key/value combination of a tag assigned to the resource.

  • tag-key - The key of a tag assigned to the resource. This filter is independent of the tag-value filter. For example, if you use both the filter "tag-key=Purpose" and the filter "tag-value=X", you get any resources assigned both the tag key Purpose (regardless of what the tag's value is), and the tag value X (regardless of what the tag's key is). If you want to list only resources where Purpose is X, see the tag:key=value filter.

  • tag-value - The value of a tag assigned to the resource. This filter is independent of the tag-key filter.

  • usage-price - The usage price of the Reserved Instance, per hour (for example, 0.84).

Type: Filter list

Required: No


The Reserved Instance offering type. If you are using tools that predate the 2011-11-01 API version, you only have access to the Medium Utilization Reserved Instance offering type.

Type: String

Valid Values: Heavy Utilization | Medium Utilization | Light Utilization | No Upfront | Partial Upfront | All Upfront

Required: No


One or more Reserved Instance IDs.

Default: Describes all your Reserved Instances, or only those otherwise specified.

Type: String list

Required: No

Response Elements

The following elements are returned.


The ID of the request.

Type: String


A list of Reserved Instances.

Type: ReservedInstances list


For information about the errors that are common to all actions, see Common Client Errors.



This example describes Reserved Instances owned by your account.

Sample Request

Sample Response

<DescribeReservedInstancesResponse xmlns="">
         <productDescription>Linux/UNIX (Amazon VPC)</productDescription>
         <offeringType>No Upfront</offeringType>


This example filters the response to include only one-year, m1.small Linux/UNIX Reserved Instances. If you want Linux/UNIX Reserved Instances specifically for use with a VPC, set the product description to Linux/UNIX (Amazon VPC).

Sample Request