 |
 |
| city/area | all listed phonenumbers of landlines should be in the |
country
code
or national long distance direct dial code |
area
code
or NPA (Numbering Plan Area) |
exchange
(Central Office) number |
line
number
each Central Office can have up to 9999 lines numbered from 0000 to 9999 |
important
|
| Zachary | Phonebook
of Louisiana.c m |
+I
|
225
|
- - -
|
- - - -
|
|
|
or
O
for Operator |
||||||
 |
the
US telephone system: orginally and before the divestiture of AT&T into 22 Baby Bells in I984 Us area-codes were rather simple,.. |
...from
200 - 900
and |
restricted
to the first I9 n°s
in a given series example 200 - 2I9 300 - 3I9 |
|
|
codes
out of this
dialing schemes are recent |
m