To allow consumers to check that the mobile number they are calling is in the same network (as the prefix i.e. 012/013/016/018 no longer has any operator significance).
The result will let the consumers know whether the number to be called is either:
- "On-Net call" (within the same network) or
- "Off-Network call" (the called number is in a different network) and consequently may be of a different rate/charge.