In the St Louis area sometimes it is 7 digits and sometimes it is 10 digits. It depends on whether or not you got a "metro line" . Some customers have metro and non-metro lines so line 1 might be 7 digits, and line 3 might be 10 digits. They don't really sell metro lines now, but if your line was originally a metro line then even if you port it to a different carrier it carries the restrictions (so much fun).

The Cloud is just someone else's computer!