UK Area Code information for Nairn

Nairn Area Code Allocation

Ofcom has allocated the 01667 area code to service Nairn and the surrounding area on at least 1 exchange.

Nairn Exchange Information


The Nairn exchange has 310 commercial and 4,954 domestic properties.
Adsl Max
Fixed Rate
Wbc Fixed Rate
Wbc Adsl 2+
Wbc Adsl 2+ Annex M
Some postcodes covered by this exange include;
IV12 4DA
IV12 4BZ
IV12 4BY
IV12 4BT
IV12 4BX
IV12 4BU
IV12 4BA
IV12 4BB
IV12 4BS
IV12 4BW
IV12 4DY
IV12 4AS
IV12 4AT
IV12 4AR
IV12 4DB
IV12 4AU
IV12 4DR
IV12 4DJ
IV12 4DE
IV12 4DD
IV12 4AP
IV12 4DQ
IV12 4DP
IV12 4BD
IV12 4EJ
IV12 4DG
IV12 4AH
IV12 4AQ
IV12 4DF
IV12 4ER
IV12 4EH
IV12 4DS
IV12 5AB
IV12 4EQ
IV12 4JD
IV12 4AW
IV12 4BL
IV12 4LU
IV12 4BN
IV12 4DL
IV12 4AN
IV12 4DW
IV12 4DN
IV12 4AJ
IV12 4AX
IV12 4AY
IV12 4DH
IV12 4BH
IV12 5AD
IV12 4NY

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.