01603 is the UK geographic dialling code for Norwich. Silux Call has 50 01603 numbers in stock (for example 01603 340749, 01603 340763, 01603 340764). Every user gets their own number with any paid plan (from £4.75 per user/month, ex VAT); extra numbers are £5.99/month.
Stock and prices checked 20 October 2026. Prices in GBP, excluding VAT.
50 numbers available
Places whose dialling code is 01603 (source: Wikidata and Ofcom area-code data). Each has its own local page with nearby towns and porting details.
Free UK number porting on every paid plan (Entry and above; not on the Free Trial). Porting is handled manually and typically takes approximately 14 working days from submission; it depends on the losing provider releasing the number.
Every user gets their own 01603 number with any paid Silux Call plan (plans from £4.75 per user per month, ex VAT, no contract). Additional 01603 numbers are £5.99 a month each, with no setup fee. Every UK area code costs the same.
50 01603 numbers were in stock when this page was generated, and the list above shows real numbers you can choose. Stock is refreshed daily.
01603 is the Ofcom geographic area code for Norwich. Towns covered on our location pages that use it include Norwich, Sprowston, Thorpe St Andrew, Reepham, Wroxham.
No. Silux Call numbers are virtual: calls ring your mobile, desktop app or web browser wherever you are, so an 01603 number gives you a local presence without a local office.
Free UK number porting on every paid plan (Entry and above; not on the Free Trial). Porting is handled manually and typically takes approximately 14 working days from submission; it depends on the losing provider releasing the number.