The 023 dialling code covers Portsmouth and Southampton and the surrounding area.
To get more information on a full number beginning 023, click here.
Phone numbers beginning 023 are geographic numbers.
So 02312 should actually be written 023 12, although it makes no difference when dialling the number. For more information on 023 numbers, see the page for the 023 area code
When calling from a landline, calls to 023 numbers can cost up to 10p per minute, dependent on the time of day, and there is usually also a call set-up fee
When calling from mobile phones, calls to these numbers cost between 10p and 40p per minute.
Most landline operators offer inclusive call packages which allow calls free at certain times of the day, or at all times, and most mobile companies include free any-time minutes in the monthly contract payment, or a bundle of minutes for a reduced cost in the form of a top-up credit.
Codes near to 023 area code: