Southampton and Portsmouth phone numbers: the 023 area code

Where does the 023 area code cover?

023 is the telephone area code for Southampton and Portsmouth, in Hampshire. It covers Southampton, Portsmouth, Eastleigh and the surrounding area. If you run a business in or around Southampton and Portsmouth, a 023 number gives you a recognisable local presence.

Doing business in Southampton and Portsmouth

The 023 code covers the south coast cities of Southampton and Portsmouth and the surrounding area, a major centre for maritime, defence, marine engineering and a busy ports and logistics economy. Both cities have large universities and growing technology and professional services sectors. Businesses across Southampton, Portsmouth and Eastleigh use local 023 numbers to stay close to a regional customer base along the south coast. A 023 number gives you a recognisable local identity, and a cloud phone system lets you answer it from either city or anywhere else, on a mobile, a desk phone or a browser.

How to get a 023 number for your business

With a Voxora cloud phone system you can get a brand new 023 (Southampton and Portsmouth) number in minutes, even if you are not based in Southampton and Portsmouth. Your calls ring on a desk phone, a mobile app or a web browser, so your team can answer a Southampton and Portsmouth number from anywhere. You can add call menus, voicemail to email, call recording and an AI receptionist on top, with no new phone lines or hardware.

Keep your existing 023 number

Already have a 023 number? You can move it to Voxora through number porting and keep it exactly as it is. Porting is normally free, your number does not change, and your calls simply start ringing on the new system once the transfer completes. This matters more than ever with the UK landline network switching off on 31 January 2027, when traditional phone lines are retired and every business needs an internet-based phone service.

Why a local Southampton and Portsmouth number still helps

A local 023 number signals to customers that you are an established, reachable business in the Southampton and Portsmouth area, which can lift answer rates and trust compared with an unknown mobile or non-geographic number. Because the number runs over the internet, you keep that local identity even if you move premises or work remotely.

How 023 numbers are written

Southampton and Portsmouth numbers are written as 023 XXXX XXXX, with 023 as the area code followed by the local number. Dial the full number including the leading zero from within the UK; callers from abroad replace the leading zero with +44.