UK Area Code information for Isles Of Scilly

Isles Of Scilly Area Code Allocation

Ofcom has allocated the 01720 area code to service Isles Of Scilly and the surrounding area on at least 1 exchange.

Isles Of Scilly Exchange Information

Scillonia WWSCIL

The Scillonia exchange has 169 commercial and 1,083 domestic properties.
Adsl Max
Fixed Rate
Fttc Range A (Clean)
Fttc Range B (Impacted)
Wbc Adsl 2+
Wbc Adsl 2+ Annex M
Some postcodes covered by this exange include;
TR21 0NR
TR21 0NP
TR21 0NS
TR21 0NF
TR21 0NT
TR21 0NW
TR21 0NU
TR21 0NE
TR21 0NX
TR21 0LF
TR21 0JY
TR21 0YB
TR21 0YA
TR21 0LB
TR21 0JZ
TR21 0NZ
TR21 0PT
TR21 0HU
TR21 0NG
TR21 0QA
TR21 0LA
TR21 0JR
TR21 0AB
TR21 0NB
TR21 0PB
TR21 0PU
TR21 0NN
TR21 0NY
TR21 0JT
TR21 0ND
TR21 0NA
TR21 0AD
TR21 0PS
TR21 0JX
TR21 0PY
TR21 0JU
TR21 0JP
TR21 0PE
TR21 0JW
TR21 0LN
TR21 0LG
TR21 0HX
TR21 0HY
TR21 0PD
TR21 0NL
TR21 0PL
TR21 0JN
TR21 0LQ
TR21 0HW
TR21 0JL

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.