01603 853 Dialing Code


Dialing Code 01603 853 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 853 after the area code indicate that the range of numbers was originally allocated to BT on 6 July 2023, 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 853
Provider: BT
Date range allocated: 6 July 2023
Call Costs: Normal landline rate
Area code required for local calls: No
Local number length: 6
Number format: 01603 853###
International number format: +44 1603 853###
Last code change: April 1995 from 0603.

This page was last updated on 9 August 2023.