Seems like twilio has four types of numbers you can request: local, national, mobile, and toll free. It looks like this gem only supports local, mobile, and toll free? Am I incorrect here, would it be simple to add this functionality?
Best I can tell, the Twilio API doesn't support the distinction. National numbers are mixed in with local numbers. Austria is one example that only has national numbers but the local number API endpoint returns values.
Yea, if you wanted to get "National" numbers, you can just look for both "Local" and "Mobile" numbers.