Should the braket.aws.AwsDevice.get_devices() API return a non-empty list of AWS Braket systems for the us-east-2 region?

Should the braket.aws.AwsDevice.get_devices() API return a non-empty list of AWS Braket systems for the us-east-2 region? (It does).

The reason for my question is that it does not look like us-east-2 is a supported service endpoint for the AWS Braket service, however when the following code is used to query the braket devices available in the us-east-2 region, a non-empty list of devices is returned:

from braket.aws import AwsDevice
import sys
import os

AWS_REGIONS = [ 'us-east-2' ]

for region in AWS_REGIONS:
    os.environ['AWS_DEFAULT_REGION'] = region

    try:
        aws_braket_devices = AwsDevice.get_devices(order_by='provider_name')
    except Exception as exception:
        exc_type, value, traceback = sys.exc_info()
        print(f'{exc_type.__name__} calling AwsDevice.get_devices()')
        raise exception

    print(f'AWS Braket devices in region {region}')
    for aws_braket_device in aws_braket_devices:
        print(f'{aws_braket_device.name:<20}{aws_braket_device.status:<10} {aws_braket_device.arn}')

When the code above is run, it prints a list of braket systems in the us-east-2 region which looks like this:

AWS Braket devices in region us-east-2
Advantage_system3.2 OFFLINE    arn:aws:braket:::device/qpu/d-wave/Advantage_system3
Advantage_system4.1 ONLINE     arn:aws:braket:::device/qpu/d-wave/Advantage_system4
Advantage_system1.1 RETIRED    arn:aws:braket:::device/qpu/d-wave/Advantage_system1
DW_2000Q_6          ONLINE     arn:aws:braket:::device/qpu/d-wave/DW_2000Q_6
IonQ Device         ONLINE     arn:aws:braket:::device/qpu/ionq/ionQdevice
Aspen-10            RETIRED    arn:aws:braket:::device/qpu/rigetti/Aspen-10
Aspen-8             RETIRED    arn:aws:braket:::device/qpu/rigetti/Aspen-8
Aspen-9             RETIRED    arn:aws:braket:::device/qpu/rigetti/Aspen-9
Aspen-11            ONLINE     arn:aws:braket:::device/qpu/rigetti/Aspen-11

However, if a user tries to access any of the ONLINE systems via a us-east-2 endpoint, the API call will fail as shown in the following example:

from braket.aws import AwsDevice
import botocore
import sys
import os

AWS_REGIONS = [ 'us-east-2' ]
for region in AWS_REGIONS:
    os.environ['AWS_DEFAULT_REGION'] = region

    try:
        aws_braket_devices = AwsDevice.get_devices(statuses=['ONLINE'], order_by='provider_name')
    except Exception as exception:
        exc_type, value, traceback = sys.exc_info()
        print(f'{exc_type.__name__} calling AwsDevice.get_devices()')
        raise exception

    print(f'Creating device objects for AWS Braket ONLINE devices in region {region}')
    for aws_braket_device in aws_braket_devices:
        print(f'Creating device obj for {aws_braket_device.arn}...')

        try:
            aws_device = AwsDevice(aws_braket_device.arn)
        except botocore.exceptions.EndpointConnectionError as exc:
            print(exc)
        except Exception as exc:
            print(exc)

        print(f'device created for {aws_braket_device.arn}')

Running this code produces the following output:

Creating device objects for AWS Braket ONLINE devices in region us-east-2
Creating device obj for arn:aws:braket:::device/qpu/d-wave/Advantage_system4...
Could not connect to the endpoint URL: "https://braket.us-east-2.amazonaws.com/device/arn%3Aaws%3Abraket%3A%3A%3Adevice%2Fqpu%2Fd-wave%2FAdvantage_system4"
device created for arn:aws:braket:::device/qpu/d-wave/Advantage_system4
Creating device obj for arn:aws:braket:::device/qpu/d-wave/DW_2000Q_6...
Could not connect to the endpoint URL: "https://braket.us-east-2.amazonaws.com/device/arn%3Aaws%3Abraket%3A%3A%3Adevice%2Fqpu%2Fd-wave%2FDW_2000Q_6"
device created for arn:aws:braket:::device/qpu/d-wave/DW_2000Q_6
Creating device obj for arn:aws:braket:::device/qpu/ionq/ionQdevice...
Could not connect to the endpoint URL: "https://braket.us-east-2.amazonaws.com/device/arn%3Aaws%3Abraket%3A%3A%3Adevice%2Fqpu%2Fionq%2FionQdevice"
device created for arn:aws:braket:::device/qpu/ionq/ionQdevice
Creating device obj for arn:aws:braket:::device/qpu/rigetti/Aspen-11...
Could not connect to the endpoint URL: "https://braket.us-east-2.amazonaws.com/device/arn%3Aaws%3Abraket%3A%3A%3Adevice%2Fqpu%2Frigetti%2FAspen-11"
device created for arn:aws:braket:::device/qpu/rigetti/Aspen-11

If the code above is modified to use a region which is a supported service endpoint for AWS Braket (such as us-east-1), then the code works as expected. (It is then possible to create device objects for all of the ARNs returned by the braket.aws.AwsDevice.get_devices() API)

Since it appears that AWS Braket devices cannot be accessed via the us-east-2 region, it seems like the braket.aws.AwsDevice.get_devices() API should be returning an empty list of AWS Braket systems for the us-east-2 region, and it is not. This API is returning a non-empty list of AWS Braket systems as if they can be reached through the us-east-2 region when in fact they cannot.