UK Area Code information for Llandeilo

Llandeilo Area Code Allocation

Ofcom has allocated the 01558 area code to service Llandeilo and the surrounding area on at least 1 exchange.

The Residential Area of Llandeilo

More about Llandeilo?

Llandeilo comprises postcodes covering roughly 680km2 containing 165 commercial properties and 1,967 domestic properties.

Llandeilo Exchange Information

Llandeilo SWLKB

The Llandeilo exchange has 165 commercial and 1,967 domestic properties.
Adsl Max
Fixed Rate
Fttc Range A (Clean)
Fttc Range B (Impacted)
Fttp On Demand
Wbc Adsl 2+
Wbc Adsl 2+ Annex M
Some postcodes covered by this exange include;
SA19 6DU
SA19 6EH
SA19 6EA
SA19 6DY
SA19 6DS
SA19 6DT
SA19 6DR
SA19 6RR
SA19 6DP
SA19 6DN
SA19 6DX
SA19 6EG
SA19 6DW
SA19 6DH
SA19 6DF
SA19 6EB
SA19 6DZ
SA19 6RX
SA19 6DD
SA19 6DE
SA19 6EE
SA19 6ED
SA19 6RP
SA19 6DL
SA19 6DB
SA19 6AW
SA19 6LR
SA19 6LP
SA19 6AP
SA19 6RZ
SA19 6BU
SA19 6DA
SA19 6RJ
SA19 6DG
SA19 6AR
SA19 6EF
SA19 6AN
SA19 6BS
SA19 6HF
SA19 6NA
SA19 6HB
SA19 6BY
SA19 6BR
SA19 6BT
SA19 6RW
SA19 6EP
SA19 6HD
SA19 6HA
SA19 6AS
SA19 6AF

Broadband Connectivity Type Definitions

Different telephone exchanges have different broadband connectivity depending on their geographic location, the consumers they serve (demand and composition of those consumers) and the competative landscape in that locale. As a result there is a mix of services and related performance which BT classify as follows;

Fixed Rate

There for three fixed rate lines; 512Kbps, 1Mbps and 2Mbps. As with IPStream 500, 1000 and 2000, these have an upstream capped at 288Kbps. Note that all of the other WBC products apart from these are strictly rate adaptive (like ADSL Max).

WBC Fixed Rate

Wholesale Broadband Connect (WBC) offers high-speed, high-performance broadband services.


BT's original ADSL2+ wholesale product with an option of an upstream cap at 448Kbps or no cap at all. ADSL2+ can achieve up to 1Mbps upstream.


ADSL2+ (also known as 21CN (21st Century Network) and WBC (Wholesale Broadband Connect) is a high speed broadband service which offers download speeds of up to 24Mbs and upload speeds of up to 1Mbs.

WBC ADSL 2+ Annex M

ADSL2+ Annex M offers up to 2.5Mbps upstream in the UK. This product is used by many businesses who could previously only find this level of upstream bandwidth with SDSL. Note that there is no option for a capped upstream with this product.

FTTC Range A (Clean)

FTTC Range A is a range where the circuits are deemed to be free of any copper line faults, and any local wiring issues (in a customer's premises). This range is often very wide for both upload and download, and does beg the question of why a copper line fault may exist without being fixed.

FTTC Range B (Impacted)

FTTC Range B is a range where circuits may have copper faults and/or internal wiring issues at a customer's site. The term impacted could be useful, as sometimes crosstalk is mentioned as something that impacts on line speeds, but there is no official word from BT on whether either Range A or Range B take into account the effects of crosstalk.

FTTP On Demand

Fiber to the home (FTTH), also called "fiber to the premises" (FTTP), is the installation and use of optical fiber from a central point directly to individual buildings such as residences, apartment buildings and businesses to provide unprecedented high-speed Internet access. FTTH dramatically increases the connection speeds available to computer users compared with technologies now used in most places.