023 9 436 Dialing Code

Portsmouth

Dialing Code 023 9 436 is part of Area Code 023, which covers Southampton & Portsmouth and the surrounding area.

Area Code 023 is split between a number of different locations and the dialing code 023 9 is allocated to Portsmouth.

The majority of numbers in the 023 Area Code belong to normal landlines in Southampton & Portsmouth, but it is possible that these numbers are being used elsewhere as virtual numbers.

There are multiple telephone companies operating in the 023 Area Code and they are allocated blocks of numbers, which can be identified by the digits following the Area Code. In this case, the digits 436 after the area code indicate that the range of numbers was originally allocated to Onvoy Communications Ltd. on 8 April 2022, although due to number portability, individual numbers within this range may now be allocated to other operators.

023 area code information

Area Code: 023
Location: Southampton & Portsmouth
Sub Area Code: 023 9
Sub Location: Portsmouth
Dialing Code: 023 9 436
Provider: Onvoy Communications Ltd.
Date range allocated: 8 April 2022
Call Costs: Normal landline rate
Area code required for local calls: No
Local number length: 8
Number format: 023 9436 ####
International number format: +44 23 9436 ####
Last code change: April 2000 from 01703 (Southampton) and 01705 (Portsmouth).