UK Area Code information for Diss

Diss Area Code Allocation

Ofcom has allocated the 01379 area code to service Diss and the surrounding area on at least 1 exchange.

The Residential Area of Diss

More about Diss?

Diss comprises postcodes covering roughly 3,811km2 containing 462 commercial properties and 5,152 domestic properties.

Diss Exchange Information


The Diss exchange has 462 commercial and 5,152 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;
IP22 3AL
IP22 4AL
IP22 4HF
IP22 4LH
IP22 3DD
IP22 4DD
IP21 4LG
IP22 1EE
IP22 1WT
IP22 1YQ
IP22 2BY
IP22 2LQ
IP22 2WA
IP22 2HH
IP22 1ZE
IP22 1ZQ
IP22 2BU
IP22 1WU
IP22 1WY
IP22 1YA
IP22 1YB
IP22 1WZ
IP22 1WW
IP22 1WX
IP22 1EY
IP22 1QS
IP22 1SZ
IP22 1WR
IP22 1WS
IP22 1TA
IP22 1QT
IP22 1QW
IP22 1QY
IP22 1JB
IP22 1LB
IP22 1PG
IP22 1PH
IP22 1PE
IP22 1JD
IP98 6WY
IP98 9RA
IP98 6WZ
IP21 4PN
IP21 4YZ
IP21 5WX
IP21 5ZB
IP22 1BJ
IP22 1DQ
IP98 6AA
IP98 1XY

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.