Use the full area code before the local subscriber number.
UK geographic telephone code
01874 area code: Brecon
The 01874 dialling code is associated with Brecon.
How to dial Brecon
Use +44 and remove the leading zero from the area code.
An area-code match describes the number range, not the caller's identity or current physical location. Caller ID can also be spoofed.
Recent reports for 01874 numbers
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I received a call today from this number claiming to be from UK mobile network
Source and review
This page uses Ofcom telephone area codes area-code information retrieved on 3 September 2026.