Areas of United Kingdom
Regulator: Ofcom (OFCOM)
Website of regulator: https://www.ofcom.org.uk
| Name | Prefix | Type |
|---|---|---|
| Aberdeen | 441224 | geo |
| Ballycastle | 442820 | geo |
| Ballymena | 442825 | geo |
| Basildon | 441268 | geo |
| Belfast | 4428 | geo |
| Birmingham | 44121 | geo |
| Bishops Waltham | 441489 | geo |
| Blackburn | 441254 | geo |
| Blackpool | 441253 | geo |
| Bolton | 441204 | geo |
| Bournemouth | 441202 | geo |
| Bradford | 441274 | geo |
| Brentwood | 441277 | geo |
| Brighton | 441273 | geo |
| Bristol | 44117 | geo |
| Bury St Edmunds | 441284 | geo |
| Camberley | 441276 | geo |
| Cambridge | 441223 | geo |
| Cardiff | 4429 | geo |
| Carlisle | 441228 | geo |
| Chester | 441244 | geo |
| Colchester | 441206 | geo |
| Cookstown | 442886 | geo |
| Coventry | 4424 | geo |
| Coventry | 442476 | geo |
| Crawley | 441293 | geo |
| Darlington | 441325 | geo |
| Dartford | 441322 | geo |
| Derby | 441332 | geo |
| Dundee | 441382 | geo |
| Eastbourne | 441323 | geo |
| Edinburgh | 44131 | geo |
| Exeter | 441392 | geo |
| Felixstowe | 441394 | geo |
| Glasgow | 44141 | geo |
| Gloucester | 441452 | geo |
| Grimsby | 441472 | geo |
| Guildford | 441483 | geo |
| Hitchin | 441462 | geo |
| Huddersfield | 441484 | geo |
| Hull | 441482 | geo |
| Ipswich | 441473 | geo |
| Kettering | 441536 | geo |
| Kilrea | 442829 | geo |
| Leeds | 44113 | geo |
| Leicester | 44116 | geo |
| Lisburn | 442892 | geo |
| Liverpool | 44151 | geo |
| London | 4420 | geo |
| London | 44203 | geo |
| Luton | 441582 | geo |
| Maidenhead | 441628 | geo |
| Maidstone | 441622 | geo |
| Manchester | 44161 | geo |
| Martinstown | 442821 | geo |
| Medway | 441634 | geo |
| Middlesbrough | 441642 | geo |
| Motherwell | 441698 | geo |
| National | 44871 | national |
| National | 44845 | national |
| National | 44844 | national |
| National | 44870 | national |
| National geo | 443 | national |
| Newcastle | 44191 | geo |
| Newport | 441633 | geo |
| Northampton | 441604 | geo |
| Northwich | 441606 | geo |
| Norwich | 441603 | geo |
| Nottingham | 44115 | geo |
| Oakham | 441572 | geo |
| Oxford | 441865 | geo |
| Peterborough | 441733 | geo |
| Plymouth | 441752 | geo |
| Portadown | 44283 | geo |
| Portsmouth | 44239 | geo |
| Portsmouth | 4423 | geo |
| Preston | 441772 | geo |
| Reading | 44118 | geo |
| Richmond | 441748 | geo |
| Ripon | 441765 | geo |
| Rochdale | 441706 | geo |
| Rotherham | 441709 | geo |
| Rugby | 441788 | geo |
| Salisbury | 441722 | geo |
| Sheffield | 44114 | geo |
| Slough | 441753 | geo |
| Southampton | 44238 | geo |
| Southend on Sea | 441702 | geo |
| Staines | 441784 | geo |
| Stamford | 44178 | geo |
| St. Helens | 441744 | geo |
| Stoke on Trent | 441782 | geo |
| Stratford upon Avon | 441789 | geo |
| Sunderland | 441915 | geo |
| Swansea | 441792 | geo |
| Swindon | 441793 | geo |
| Telford | 441952 | geo |
| Thanet | 441843 | geo |
| Tollfree | 44808 | tollfree |
| Watford | 441923 | geo |
| Wigan | 441942 | geo |
| Wincester | 441962 | geo |
| Wolverhampton | 441902 | geo |
| Worcester | 441905 | geo |
| Wormbridge | 441981 | geo |
| York | 441904 | geo |
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