Judging by the number of nuisance callers it is reporting as having blocked, the number of such callers trying to get through has increased, just as I put the new phones in.
Mostly their number is 'unavailable, some present a number with 0020 or
00??. Sometimes the 0020's are valid numbers if the initial zero is deleted. I am getting calls from spoofed local numbers, usually none existent numbers, over the weekend one was spoofed to present a very local number from within the village, so I rang the number just to make sure - there had been no one in the house at the time, to dial us.