Describe Subnets Response from the service

You can filter the results to return information only about subnets that match criteria you specify. For example, you could ask to get information about a particular subnet (or all) only if the subnet's state is available. You can specify multiple filters (e.g., the subnet is in a particular VPC, and the subnet's state is available). The result includes information for a particular subnet only if the subnet matches all your filters. If there's no match, no special message is returned; the response is simply empty