Use the full area code before the local subscriber number.
UK geographic telephone code
01654 area code: Machynlleth
The 01654 dialling code is associated with Machynlleth.
How to dial Machynlleth
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 01654 numbers
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Claiming to be calling on behalf of eon. SCAM.
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Caller claims to be from Eon, but they called Friday to say they were from British Gas some kind of scam.
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Some electric company wanting my details to transfer my account to them. As I have not requested a transfer seems fishy to me.
Source and review
This page uses Ofcom telephone area codes area-code information retrieved on 3 September 2026.