01603 20 Dialing Code

Norwich

Dialing Code 01603 20 is part of Area Code 01603, which covers Norwich and the surrounding area.

The majority of numbers in the 01603 Area Code belong to normal landlines in Norwich, but it is possible that these numbers are being used elsewhere as virtual numbers.

There are multiple telephone companies operating in the 01603 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 20 after the area code indicate that the range of numbers was originally allocated to Vodafone Ltd (C&W) on 6 September 2013, although due to number portability, individual numbers within this range may now be allocated to other operators.

01603 area code information

Area Code: 01603
Location: Norwich
Dialing Code: 01603 20
Provider: Vodafone Ltd (C&W)
Date range allocated: 6 September 2013
Call Costs: Normal landline rate
Area code required for local calls: No
Local number length: 6
Number format: 01603 20####
International number format: +44 1603 20####
Last code change: April 1995 from 0603.

This page was last updated on 9 August 2023.