UK Area Code information for Cranbrook

Cranbrook Area Code Allocation

Ofcom has allocated the 01580 area code to service Cranbrook and the surrounding area on at least 1 exchange.

The Residential Area of Cranbrook

More about Cranbrook?

Cranbrook comprises postcodes covering roughly 1,490km2 containing 258 commercial properties and 2,541 domestic properties.

Cranbrook Exchange Information

Cranbrook NDCRA

The Cranbrook exchange has 258 commercial and 2,541 domestic properties.
Some postcodes covered by this exange include;
TN17 3EN
TN17 3EL
TN17 3DT
TN17 3EP
TN17 3DR
TN17 3LZ
TN17 3TF
TN17 3XT
TN17 3ZP
TN17 3ZR
TN17 3ZT
TN17 3DQ
TN17 3ES
TN17 3EJ
TN17 3DH
TN17 3DP
TN17 3LB
TN17 3DW
TN17 3EG
TN17 3EA
TN17 3ER
TN17 3EH
TN17 3EW
TN17 3NY
TN17 3EF
TN17 3NA
TN17 3LU
TN17 3EU
TN17 3DU
TN17 3DJ
TN17 3DS
TN17 3DY
TN17 3DN
TN17 3ET
TN17 3EE
TN17 3DZ
TN17 3ND
TN17 3DX
TN17 3PE
TN17 3LT
TN17 3LG
TN17 3DL
TN17 3LX
TN17 3DG
TN17 3ED
TN17 2AL
TN17 3LS
TN17 2XQ
TN17 3RB
TN18 4ZP

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.