Use DescribeIdFormat with an Amazon SDK or CLI

Example 1: To describe the ID format of a resource

The following describe-id-format example describes the ID format for security groups.

aws ec2 describe-id-format \
    --resource security-group

In the following example output, the Deadline value indicates that the deadline for this resource type to permanently switch from the short ID format to the long ID format expired at 00:00 UTC on August 15, 2018.

{
    "Statuses": [
        {
            "Deadline": "2018-08-15T00:00:00.000Z",
            "Resource": "security-group",
            "UseLongIds": true
        }
    ]
}

Example 2: To describe the ID format for all resources

The following describe-id-format example describes the ID format for all resource types. All resource types that supported the short ID format were switched to use the long ID format.

aws ec2 describe-id-format

Example 1: This example describes the ID format for the specified resource type.

Get-EC2IdFormat -Resource instance

Output:

Resource       UseLongIds
--------       ----------
instance       False

Example 2: This example describes the ID formats for all resource types that support longer IDs.

Get-EC2IdFormat

Output:

Resource       UseLongIds
--------       ----------
reservation    False
instance       False