[hsbauauvhabzb]

My country has online anonymous tips online, and pay phones.

I don’t think caller id blocking would work with the police, they almost certainly have the ability to unmask your number if they want.

[carlosjobim]

And why would they want to do that? The police relies on anonymous tips.

[hsbauauvhabzb]

Because they almost certainly have fake tip-offs, they’re not going to ignore those.