[asterisk-users] Seemingly easy question: NPA/NXX

[Luki]

>  When number starts with 011, and as country code and city code is
> identified, expect as many numbers as determined by country+city code
> (once you know country and city code, you know how many local digits to
> expect)

... except in some countries, the phone numbers vary in length in the
same city. Say in Hamburg, Germany, your number can be as short as 5
digits or as long as 10. You really have no way of knowing.

Luki