On 23 Jul 2018, Ken Blake wrote in
alt.windows7.general:

On Mon, 23 Jul 2018 17:19:20 -0400, Nil
wrote:

For two, my phone carrier has an on-line log of all calls, blocked
or not.

Ah, that's the way you know. I don't know whether mine does or
not. I've never looked. I don't particularly care who they're
blocked, but out of curiosity, I'll check when I get a chance.

I started off wanting to make sure Nomorobo wasn't blocking calls that
it shouldn't. As far as I can tell, it never has. I kept keeping track
because I was interested to see things like, what numbers recurred, any
patterns of frequency or time of day, what spam campaigns were going
around, etc.