As counter measure to text scams the Australian government (actually ACMA which I think is the Au version of the FCC) has introduced a national register of Sender Ids, which comes in to effect on the 1st of July. It requires providers to mark any unregistered Sender Id as 'Unverified'

I haven't yet been able to find the full register (if it's even public) but I thought this is an interesting approach.