I'm just testing it.
If it can never block new scam texts because the scammers keep changing the numbers then its pretty pointless, as all scam texts will be unique.
Its not based on the phone number. Its checking for known fraud links. The bank is obviously set up to protect its own brand, so ptsb links should be blocked immediately. Other branded fraud links like eflow, anpost, revenue etc may not be as quick to be blocked as the bank will have to ensure its brand is targeted in those links before legally blocking