UK Area Code information for Caernarfon

Caernarfon Area Code Allocation

Ofcom has allocated the 01286 area code to service Caernarfon and the surrounding area on at least 1 exchange.

The Residential Area of Caernarfon

More about Caernarfon?

Caernarfon comprises postcodes covering roughly 3,011km2 containing 469 commercial properties and 5,735 domestic properties.

Caernarfon Exchange Information

Caernarfon WNCA

The Caernarfon exchange has 469 commercial and 5,735 domestic properties.
Some postcodes covered by this exange include;
LL55 1NS
LL55 1NW
LL55 1PP
LL55 1NN
LL55 1QL
LL55 2HN
LL55 1EP
LL55 1RY
LL55 2RA
LL55 1NP
LL55 1AF
LL55 1PR
LL55 1BW
LL55 2AD
LL55 1AB
LL55 1NH
LL55 1AD
LL55 1AN
LL55 2NE
LL55 2AS
LL55 1AE
LL55 2WY
LL55 2AA
LL55 1RD
LL55 1AL
LL55 1AS
LL55 1TL
LL55 1AH
LL55 2NA
LL55 1AP
LL55 1AU
LL55 1AG
LL55 1AT
LL55 1RB
LL55 2NB
LL55 2AL
LL55 1PA
LL55 1NF
LL55 1NG
LL55 1AW
LL55 1SZ
LL55 2AB
LL55 1PE
LL55 1BN
LL55 2NF
LL55 1NT
LL55 2ND
LL55 1PD
LL55 2AE
LL55 1PB

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.