Telephone Exchange
Clunderwen Telephone Exchange

Fibre Enabled

BT Broadband Fibre to the Cabinet, Fibre to the Premises & Fibre on Demand services are available to customers connected to the Clunderwen exchange. Most customers can now upgrade from ADSL to fibre internet. BT Broadband is supplied via the Openreach Network. BT Broadband



Local Authority = Pembrokeshire County Council

UK area dialling code (STD code) for the Clunderwen exchange is 01437

International dialling code for the Clunderwen exchange is +44 1437 or 0044 1437

The Clunderwen exchange is in the Haverfordwest group of exchanges.

11 telephone exchanges form this regional grouping.

OS Grid Ref: SN 12103 20106

Exchange Address

Located at :-
British Telecom,
Telephone Exchange,
Llandissilio,
CLYNDERWEN.
SA66 7SS

/// what3words geocode = Basket Armed Newlyweds

Clunderwen -> Carmarthenshire -> Wales

See Location Map Below

Exchange Location



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Openreach Identifer

  • Network identifier code for the Clunderwen exchange is SWZEN

Fibre To The Cabinet

  • The Clunderwen exchange provides fibre services.

21CN WBC

  • This exchange has not been 21CN WBC enabled

ADSL Max

  • The Clunderwen exchange has been enabled for ADSL Max since March 2006

ADSL

  • The Clunderwen telephone exchange in Carmarthenshire was enabled for ADSL in February 2005

Ofcom Classification

  • The BT exchange, Clunderwen is classified by Ofcom as:- Market 1.
Virgin Media

PSTN Network Switch Off In 2027

Openreach and the wider UK telecoms industry are retiring the old Public Switched Telephone Network (PSTN) and associated copper-based services as part of the move to an all-digital, internet-protocol (IP) based network.

The PSTN and associated wholesale copper services - including traditional analogue phone lines, ISDN2, ISDN30 and other legacy products - are being withdrawn.

These services historically relied on copper wiring connected from exchanges to premises. They will be replaced with digital alternatives such as Full Fibre (FTTP) and IP-based broadband services like SOGEA, SOGFAST and other All-IP products.

Originally planned for December 2025, the final withdrawal of the PSTN network has been rescheduled to 31 January 2027 to give more time for migration, particularly for vulnerable customers and specialist services. By this date, all legacy services that depend on the PSTN must be transitioned off the copper network.

Openreach have not identified the Clunderwen Exchange as a 'FTTP Priority Exchange' and the 'Stop Sell' date was September 2023.

Stop Sell is triggered when a majority (75%) of premises connected to a particular exchange can get ultrafast Full Fibre. Customers who then want to switch, upgrade or re-grade their broadband or phone service will have to take a new digital service over their new Full Fibre network.