01604 is the UK geographic dialling code for Northampton. Silux Call has 18 01604 numbers in stock (for example 01604 422897, 01604 422898, 01604 422904). Your first number is included with any paid plan (from £4.75 per line/month, ex VAT); extra numbers are £5.99/month.
Stock and prices checked 26 September 2026. Prices in GBP, excluding VAT.
18 numbers available
Places whose dialling code is 01604 (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.
Your first 01604 number is included with any paid Silux Call plan (plans from £4.75 per line per month, ex VAT, no contract). Additional 01604 numbers are £5.99 a month each, with no setup fee. Every UK area code costs the same.
18 01604 numbers were in stock when this page was generated, and the list above shows real numbers you can choose. Stock is refreshed daily.
01604 is the Ofcom geographic area code for Northampton. Towns covered on our location pages that use it include Northampton.
No. Silux Call numbers are virtual: calls ring your mobile, desktop app or web browser wherever you are, so an 01604 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.