I've found that VOIP numbers from certain countries and area codes can evade this problem. Not listing publicly, in case the idiots in charge of the system are

I've found that VOIP numbers from certain countries and area codes can evade this problem. Not listing publicly, in case the idiots in charge of the system are prowling this site. But I don't even understand why they're allowed to look up the provider, or why I can't define myself as a mobile operator.