Viewing a single comment thread. View all comments

TehWildMan_ t1_jaetdvo wrote

North American telephone numbering plan numbers are 10 digits long including a 3 digit area code

Despite some area codes and branch prefixes being reserved, this still provides enough numbers for current needs.

7

stevedaher t1_jaev9d0 wrote

Apparently it’s 7.9 billion combos available

2