UK Area Code information for Clynderwen

Clynderwen Area Code Allocation

Ofcom has allocated the 01437 area code to service Clynderwen and the surrounding area on at least 1 exchange.

The Residential Area of Clynderwen

More about Clynderwen?

Clynderwen comprises postcodes covering roughly 280km2 containing 0 commercial properties and 0 domestic properties.

Clynderwen Exchange Information

Clunderwen SWZEN

The Clunderwen exchange has 63 commercial and 796 domestic properties.
Adsl Max
Fixed Rate
Wbc Adsl 2+
Wbc Adsl 2+ Annex M
Some postcodes covered by this exange include;
SA66 7SR
SA66 7NL
SA66 7NH
SA66 7ST
SA66 7NJ
SA66 7NN
SA66 7NW
SA66 7NQ
SA66 7SS
SA66 7NP
SA66 7NG
SA66 7NF
SA66 7PP
SA66 7NY
SA66 7NA
SA66 7NS
SA66 7NE
SA66 7SU
SA66 7NB
SA66 7PN
SA66 7ND
SA66 7SX
SA66 7TH
SA66 7PL
SA66 7NR
SA66 7UE
SA66 7SY
SA66 7PR
SA66 7TA
SA66 7SZ
SA66 7TJ
SA66 7TB
SA66 7TD
SA66 7HG
SA66 7TE
SA66 7TF
SA66 7PS
SA66 7HQ
SA66 7JJ
SA66 7HE
SA66 7TQ
SA66 7TG
SA66 7TP
SA66 7TL
SA66 7TR
SA66 7HL
SA66 7PX
SA66 7TS
SA66 7TN
SA66 7PA

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.