On: Ask HN: Why there's no crowdsourced phone number blocklist?

[latexr]

Quite the contrary, such lists are a dime a dozen. Search the web for the phone number—not for a list—and you should get several hits from different websites.

[electricant → latexr]

I was thinking more of a blocklist to be applied using the official android API for blocking numbers (https://source.android.com/devices/tech/connect/block-number...).

That's why searching for a number directly won't work.