[browningstreet]

They call me about my car’s extended warranty every day whether google has my number or not.

I also get a call, every day, precisely at 9:04am, from random numbers matching the first 6 digits of my phone number.

Protecting my phone number is a dead effort on my end.

[Nextgrid]

There's a difference between random spam and having a world-scale stalker knowing your number. The first doesn't have any other details on you, the latter already has plenty and wants the phone number to infer your social graph.