def get_network_usage(access_token, subscription_id, location):
    '''List network usage and limits for a location.

    Args:
        access_token (str): A valid Azure authentication token.
        subscription_id (str): Azure subscription id.
        location (str): Azure data center location. E.g. westus.

    Returns:
        HTTP response. JSON body of network usage.
    '''
    endpoint = ''.join([get_rm_endpoint(),
                        '/subscriptions/', subscription_id,
                        '/providers/Microsoft.Network/locations/', location,
                        '/usages?api-version=', NETWORK_API])
    return do_get(endpoint, access_token)