[jsjohnst]

Not necessarily. Do we know every single number in the 3.8B is unique? I’ve seen zero proof of that, but maybe I missed it.

[sellyme]

I'm pretty sure that would qualify as the number being "made up".

If anyone disagrees, I'm happy to sell my database of 100B valid phone numbers.

[jsjohnst]

> I'm pretty sure that would qualify as the number being "made up".

Not necessarily. Let me give you an example, if there’s other metadata included with a specific contact list entry, it would be valuable to have duplicate numbers, as that extra metadata could then be leveraged potentially.