UK Area Code information for Heathfield

Heathfield Area Code Allocation

Ofcom has allocated the 01435 area code to service Heathfield and the surrounding area on at least 1 exchange.

The Residential Area of Heathfield

More about Heathfield?

Heathfield comprises postcodes covering roughly 4,088km2 containing 386 commercial properties and 4,415 domestic properties.

Heathfield Exchange Information

Heathfield NDHEA

The Heathfield exchange has 386 commercial and 4,415 domestic properties.
Adsl Max
Fixed Rate
Fttc Range A (Clean)
Fttc Range B (Impacted)
Wbc Fixed Rate
Wbc Adsl 2+
Wbc Adsl 2+ Annex M
Some postcodes covered by this exange include;
TN21 8LD
TN21 8LB
TN21 8JR
TN21 9ZF
TN21 8PH
TN21 8XQ
TN21 8PZ
TN21 8RS
TN21 8WA
TN21 0AZ
TN21 0BW
TN21 1AL
TN21 1BN
TN21 1DG
TN21 8GT
TN21 1DH
TN21 1DN
TN21 1DQ
TN21 1DJ
TN21 1DL
TN21 1BQ
TN21 1BY
TN21 1DE
TN21 1BU
TN21 1AQ
TN21 1AS
TN21 1AT
TN21 1AR
TN21 0WS
TN21 0WU
TN21 0ZF
TN21 0ZH
TN21 0ZL
TN21 9ZT
TN21 9ZU
TN21 9ZY
TN21 9BQ
TN21 8YU
TN21 8YX
TN21 9WB
TN21 9ZL
TN21 9ZR
TN21 9ZP
TN21 8ZQ
TN21 9ZE
TN21 9ZG
TN21 9WD
TN21 9WX
TN21 9WZ
TN21 9WY

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.