[perl4ever]

>Most of these numbers should not have been publicly available in the first place

Which are "these" numbers? I thought that in fact, the numbers that were leaked in this batch were set public by the users at some point, and the ones which were not, were not leaked.

https://haveibeenpwned.com/ indicates my phone has not been leaked, nor my @facebook address.

[twobitshifter]

No, it’s the people you may know feature leaking phone numbers. Facebook eats your contact list and matches it with users based on their phone numbers. This allowed you to see any random phone numbers profile. Facebook assumed that since you have the number you must know the person.