01437 area code: Haverfordwest and Clynderwen (Clunderwen)
01437 is the UK dialling code for Haverfordwest and Clynderwen (Clunderwen), in Pembrokeshire, Wales. Numbers are 01437 followed by 6 digits.
- Area
- Haverfordwest, Clynderwen (Clunderwen)
- Where
- Pembrokeshire, Wales
- Written as
- 01437 xxxxxx
- Digits in a full number
- 11, including the 0
- Calling from abroad
- +44 1437 xxxxxx
- Phone companies holding ranges
- 87 (Ofcom allocation data). This doesn’t show which company a particular number is with, or who uses it.
Where 01437 is
Haverfordwest is a town in Pembrokeshire, Wales. The code also covers Clynderwen.
Could it be someone you know?
A number showing 01437 might look familiar. Check the full number before trusting the caller. It can help to think whether you know someone in or around Haverfordwest, Milford Haven or Narberth, have used a business there, booked or applied for something nearby, or are expecting a callback.
Codes near Haverfordwest
Straight-line distance from Haverfordwest.
Does 01437 tell me who called?
No. 01437 is assigned to Haverfordwest and Clynderwen, but that doesn’t prove who is calling or where they are. Caller ID can be faked, a number keeps its code when it moves provider, and 87 phone companies hold ranges of 01437 numbers. Search the full number to see what people have reported about it and which phone company its range was given to.
Caller says they’re your bank, HMRC, the police or a courier? Hang up and call a number you trust, from your card, a letter or their website, or dial 159 for most UK banks.
Reported 01437 numbers
Nobody has reported an 01437 number to us yet. If one has been calling you, report it so the next person sees it.
Codes, code lengths and provider counts from Ofcom’s numbering data, downloaded 23 September 2026. Places from Wikidata. All UK area codes · Who called me? · Stop spam calls