NonprayingMantis:
Presumably the larger ISPs will operate on some kind of credit though ’30 days’ or something.
Why would they? It's less work for them to demand immediate payment and simply throw away any not paid for by the following day, if not received with cheque attached. It's not like any of them WANT to be participating in the scheme. Cover your backside by complying with the letter of the law and no more, I would have thought.