Editing Telephone numbering plan (section)

===Subscriber number===
The subscriber number is the address assigned to a telephone line or wireless communication channel terminating at the customer equipment. The first few digits of the subscriber number may indicate smaller geographical scopes, such as towns or districts, based on municipal aspects, or individual [[telephone exchange]]s (''central office code''), such as a wire centers. In mobile networks they may indicate the network provider. Callers in a given area sometimes do not need to include area prefixes when dialing within the same area, but devices that dial telephone numbers automatically may include the full number with area and access codes.

The subscriber number is typically listed in local telephone directories, and is therefore often referred to as the ''directory number''.