WhoCalledLookup
Look up a number

UK area codes — every 01/02 dialling code

594 UK area codes are listed below, grouped by region. Click any code to see allocated number ranges, range holders, and a who-called-me guide for that area.

Browse: UK towns A–Z · Browse by region

UK geographic area codes — the prefixes that begin 01, 02 and a small number of legacy mixed codes — are administered by Ofcom under the National Telephone Numbering Plan. Each code anchors on a principal town and reaches across the surrounding charging area; for the larger metropolitan codes (020 London, 0121 Birmingham, 0161 Manchester) the catchment can extend tens of miles. Below, every currently-published code is listed by region, with the principal town shown next to the digits. Click through to a code page to see the live Ofcom range allocations, the wholesale Range Holders assigned to each block, and a per-area reverse-lookup form.

UK numbering is structured by family rather than by location: 01 and 02 codes are geographic (anchored to a town), 03 codes are non-geographic at landline rates, 07 codes are mobile or personal-numbering, 08 codes are freephone or service, and 09 codes are premium-rate. This index covers the geographic 01/02 ranges only. For non-geographic prefixes, see the popular non-geographic prefixes on the homepage. For the editorial overview of the entire UK numbering plan, see How Ofcom allocates UK phone numbers.

A geographic code does not guarantee that the caller is physically in the named town. UK number portability lets a customer keep their dialling code after moving anywhere in the UK, and business contact-centres frequently provision regional CLIs to look local on caller ID. The Range Holder shown on a code page is the wholesale carrier the block was issued to at allocation, which is the strongest free public signal for narrowing down the actual caller — but the live carrier and end-user can have changed since allocation. To identify a specific number, paste the digits into the lookup form on the homepage; the result page combines the structured Ofcom data with a live AI internet check that pulls public reports from forums, scam-reporting databases and business directory listings.

UK regions at a glance

A one-line snapshot of each region’s share of the 594 codes below — the count of dialling codes, its most-populous principal towns, and the combined catchment where ONS population figures are published.

  • Scotland has 145 dialling codes, led by Glasgow (0141), Edinburgh (0131) and Aberdeen (01224). Combined published catchment: roughly 1,513,000 people across 4 towns with an ONS estimate.
  • Wales has 50 dialling codes, led by Swansea (01792), Newport (01633) and Cardigan (01239). Combined published catchment: roughly 402,000 people across 2 towns with an ONS estimate.
  • Devon has 20 dialling codes, led by Plymouth (01752), Exeter (01392) and Bideford (01237). Combined published catchment: roughly 393,000 people across 2 towns with an ONS estimate.
  • Lincolnshire has 18 dialling codes, led by Boston (01205), Honington (01400) and Holbeach (01406).
  • North Yorkshire has 18 dialling codes, led by York (01904), Middlesbrough (01642) and Harrogate (01423). Combined published catchment: roughly 385,000 people across 2 towns with an ONS estimate.
  • Kent has 15 dialling codes, led by Canterbury (01227), Ashford (01233) and Folkestone (01303).
  • Somerset has 15 dialling codes, led by Bath (01225), Clevedon (01275) and Bridgwater (01278). Combined published catchment: roughly 95,000 people across 1 town with an ONS estimate.
  • Cornwall has 14 dialling codes, led by Bodmin (01208), Redruth (01209) and Bude (01288).
  • Norfolk has 14 dialling codes, led by Norwich (01603), Cromer (01263) and Fakenham (01328). Combined published catchment: roughly 144,000 people across 1 town with an ONS estimate.
  • Hampshire has 12 dialling codes, led by Aldershot (01252), Basingstoke (01256) and Andover (01264).
  • Essex has 11 dialling codes, led by Southend-on-Sea (01702), Colchester (01206) and Chelmsford (01245). Combined published catchment: roughly 183,000 people across 1 town with an ONS estimate.
  • Suffolk has 11 dialling codes, led by Bury St Edmunds (01284), Pakenham (01359) and Felixstowe (01394).
  • Cheshire has 10 dialling codes, led by Chester (01244), Congleton (01260) and Crewe (01270).
  • Hertfordshire has 10 dialling codes, led by Bishop's Stortford (01279), Stevenage (01438) and Hemel Hempstead (01442).
  • Shropshire has 10 dialling codes, led by Ludlow (01584), Bishop's Castle (01588) and Market Drayton (01630).
  • Derbyshire has 9 dialling codes, led by Derby (01332), Chesterfield (01246) and Buxton (01298). Combined published catchment: roughly 257,000 people across 1 town with an ONS estimate.
  • Lancashire has 9 dialling codes, led by Blackpool (01253), Preston (01772) and Clitheroe (01200). Combined published catchment: roughly 261,000 people across 2 towns with an ONS estimate.
  • Oxfordshire has 9 dialling codes, led by Oxford (01865), Abingdon (01235) and Banbury (01295). Combined published catchment: roughly 162,000 people across 1 town with an ONS estimate.
  • Surrey has 9 dialling codes, led by Camberley (01276), Dorking (01306) and Esher (01372).
  • Cambridgeshire has 8 dialling codes, led by Peterborough (01733), Cambridge (01223) and Ely (01353). Combined published catchment: roughly 360,000 people across 2 towns with an ONS estimate.
  • Cumbria has 8 dialling codes, led by Carlisle (01228), Barrow-in-Furness (01229) and Kendal (01539).
  • Herefordshire has 8 dialling codes, led by Hereford (01432), Ledbury (01531) and Kington (01544).
  • Northumberland has 8 dialling codes, led by Berwick-upon-Tweed (01289), Hexham (01434) and Prudhoe (01661).
  • West Yorkshire has 8 dialling codes, led by Bradford (01274), Halifax (01422) and Huddersfield (01484). Combined published catchment: roughly 537,000 people across 1 town with an ONS estimate.
  • Wiltshire has 8 dialling codes, led by Swindon (01793), Chippenham (01249) and Devizes (01380). Combined published catchment: roughly 222,000 people across 1 town with an ONS estimate.
  • Dorset has 7 dialling codes, led by Bournemouth (01202), Blandford (01258) and Cerne Abbas (01300). Combined published catchment: roughly 198,000 people across 1 town with an ONS estimate.
  • East Yorkshire has 7 dialling codes, led by Kingston upon Hull (01482), Bridlington (01262) and Driffield (01377). Combined published catchment: roughly 268,000 people across 1 town with an ONS estimate.
  • Gloucestershire has 7 dialling codes, led by Cheltenham (01242), Cirencester (01285) and Stow-on-the-Wold (01451).
  • Staffordshire has 7 dialling codes, led by Stoke-on-Trent (01782), Burton-upon-Trent (01283) and Ipstones (01538). Combined published catchment: roughly 256,000 people across 1 town with an ONS estimate.
  • West Sussex has 7 dialling codes, led by Chichester (01243), Crawley (01293) and East Grinstead (01342).
  • County Durham has 6 dialling codes, led by Consett (01207), Darlington (01325) and Bishop Auckland (01388).
  • East Sussex has 6 dialling codes, led by Brighton (01273), Eastbourne (01323) and Hastings (01424). Combined published catchment: roughly 230,000 people across 1 town with an ONS estimate.
  • Outer Hebrides has 6 dialling codes, led by Stornoway (01851), Harris (01859) and Isle of Benbecula (01870).
  • West Midlands has 6 dialling codes, led by Birmingham (0121), Coventry (024) and Wolverhampton (01902). Combined published catchment: roughly 1,775,000 people across 3 towns with an ONS estimate.
  • Worcestershire has 6 dialling codes, led by Bewdley (01299), Evesham (01386) and Redditch (01527).
  • Berkshire has 5 dialling codes, led by Bracknell (01344), Hungerford (01488) and Maidenhead (01628).
  • Leicestershire has 5 dialling codes, led by Hinckley (01455), Loughborough (01509) and Coalville (01530).
  • Northamptonshire has 5 dialling codes, led by Northampton (01604), Daventry (01327) and Kettering (01536). Combined published catchment: roughly 224,000 people across 1 town with an ONS estimate.
  • Nottinghamshire has 5 dialling codes, led by Mansfield (01623), Newark (01636) and Retford (01777).
  • Warwickshire has 5 dialling codes, led by Lapworth (01564), Coleshill (01675) and Rugby (01788).
  • Bedfordshire has 4 dialling codes, led by Bedford (01234), Leighton Buzzard (01525) and Luton (01582).
  • Buckinghamshire has 4 dialling codes, led by Milton Keynes (01908), Buckingham (01280) and Aylesbury (01296). Combined published catchment: roughly 287,000 people across 1 town with an ONS estimate.
  • Greater London has 4 dialling codes, led by London (020), Orpington (01689) and Romford (01708). Combined published catchment: roughly 8,982,000 people across 1 town with an ONS estimate.
  • Greater Manchester has 4 dialling codes, led by Manchester (0161), Bolton (01204) and Rochdale (01706). Combined published catchment: roughly 553,000 people across 1 town with an ONS estimate.
  • Shetland has 4 dialling codes, led by Lerwick (01595), Shetland (01806) and Sandwick (01950).
  • Yorkshire has 4 dialling codes, led by Leeds (0113), Sheffield (0114) and Guisborough (01287). Combined published catchment: roughly 1,377,000 people across 2 towns with an ONS estimate.
  • Merseyside has 3 dialling codes, led by Liverpool (0151), Southport (01704) and St Helens (01744). Combined published catchment: roughly 500,000 people across 1 town with an ONS estimate.
  • Orkney has 3 dialling codes, led by Kirkwall (01596), Orkney (01856) and Sanday (01857).
  • South Yorkshire has 3 dialling codes, led by Barnsley (01226), Doncaster (01302) and Rotherham (01709).
  • Channel Islands has 2 dialling codes, led by Guernsey (01481) and Jersey (01534).
  • East Midlands has 2 dialling codes, led by Leicester (0116) and Nottingham (0115). Combined published catchment: roughly 705,000 people across 2 towns with an ONS estimate.
  • Northern Ireland has 2 dialling codes, led by Northern Ireland (028) and Ballynahinch (01396). Combined published catchment: roughly 1,900,000 people across 1 town with an ONS estimate.
  • Isle of Man has 1 dialling code, led by Isle of Man (01624).
  • Isle of Wight has 1 dialling code, led by Isle of Wight (01983).
  • North East has 1 dialling code, led by Tyneside / Newcastle / Sunderland / Durham (0191). Combined published catchment: roughly 880,000 people across 1 town with an ONS estimate.
  • Rutland has 1 dialling code, led by Oakham (01572).
  • South Coast has 1 dialling code, led by Southampton & Portsmouth (023). Combined published catchment: roughly 540,000 people across 1 town with an ONS estimate.
  • South Wales has 1 dialling code, led by Cardiff (029). Combined published catchment: roughly 480,000 people across 1 town with an ONS estimate.
  • South West has 1 dialling code, led by Bristol (0117). Combined published catchment: roughly 467,000 people across 1 town with an ONS estimate.
  • Thames Valley has 1 dialling code, led by Reading (0118). Combined published catchment: roughly 318,000 people across 1 town with an ONS estimate.

Bedfordshire

Berkshire

Buckinghamshire

Cambridgeshire

Channel Islands

Cheshire

Cornwall

County Durham

Cumbria

Derbyshire

Devon

Dorset

East Midlands

East Sussex

East Yorkshire

Essex

Gloucestershire

Greater London

Greater Manchester

Hampshire

Herefordshire

Hertfordshire

Isle of Man

Isle of Wight

Kent

Lancashire

Leicestershire

Lincolnshire

Merseyside

Norfolk

North East

North Yorkshire

Northamptonshire

Northern Ireland

Northumberland

Nottinghamshire

Orkney

Outer Hebrides

Oxfordshire

Rutland

Scotland

Shetland

Shropshire

Somerset

South Coast

South Wales

South West

South Yorkshire

Staffordshire

Suffolk

Surrey

Thames Valley

Wales

Warwickshire

West Midlands

West Sussex

West Yorkshire

Wiltshire

Worcestershire

Yorkshire

Browse by region

Jump straight to the dialling-code hub for any UK region — each page lists every (code, town) pair in that region with a deep link into the per-town reverse-lookup view.

Source: Ofcom National Telephone Numbering Plan. Page updated 2026-06-29. WhoCalledLookup is not affiliated with Ofcom.