Fibre to the Cabinet, Fibre to the Premises & Fibre on Demand services are available to customers connected to the Llanrumney exchange. Most customers can now upgrade from ADSL to fibre internet. BT Broadband is supplied via the Openreach Network. BT Broadband
Local Authority = City of Cardiff Council
UK area dialling code (STD code) for the Llanrumney exchange is 029
International dialling code for the Llanrumney exchange is +44 29 or 0044 29
The Llanrumney exchange is in the Cardiff group of exchanges.
16 telephone exchanges form this regional grouping.
Llanrumney
Located at :-
British Telecom,
Telephone Exchange,
3 Llanrumney Avenue,
Llanrumney,
CARDIFF.
CF3 4BP
/// what3words geocode = Elbow Ticket Spends
Llanrumney -> Cardiff -> Wales
See Location Map Below
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copper services - including traditional analogue phone lines, ISDN2, ISDN30 and other legacy products - are being withdrawn.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.
On 22nd April 2024 Openreach declared the Llanrumney Exchange, Cardiff as a 'FTTP Priority Exchange' as part of their Tranche 16 list of exchanges and issued a 'Stop Sell' notice effective from Monday 26th May 2025
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.