Operator Directory | United Kingdom
Operators in: United Kingdom GBR
Dial code: +44
Operators: 427
Number ranges: 115,375
| Country | ISO | Telephone number types | MCC | MNC | Operator |
|---|---|---|---|---|---|
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | (AQ) LIMITED |
| United Kingdom | GBR | FREEPHONE | 234 | — | 001 International Telecom |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | 08 Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, MOBILE | 234 | — | 08Direct Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, MOBILE | 234 | 50 | 08Direct Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | 10ACT Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, MOBILE, PAGING, PERSONAL | 234 | — | 24 Seven Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, MOBILE, PAGING, PERSONAL | 234 | 55 | 24 Seven Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | 4D INTERACTIVE LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | 8x8 UK Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL | 234 | — | A2B Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | API Telecom Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | ATH LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Adepteo Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Admiral Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Alnitak GmbH |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Aloha Telecommunications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Alphatalk Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Andrews & Arnold (Numbers) Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL | 234 | — | Assume Nothing Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, UAN | 234 | — | Atlantic Communications Corp Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL | 234 | — | Atlas Interactive Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Atomstream Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | BCH Digital Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | BT |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Barritec Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN, VOIP | 234 | — | Barritel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Belgacom International Carrier Services SA |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Bicom Systems EURL |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Bink Networks Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Budget Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Business Broadcast Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Buzz Networks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, VOIP | 234 | — | C2C Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | CALLABLE LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | CFL Communications Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Call Stream Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Callitech Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Callmonitor Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Calltracks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Century Link Communications UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Chess Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Cirrus Response Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | — | Citrus Telecommunications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | 39 | Citrus Telecommunications Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | City Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Cloud Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Cloudcall Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Club Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Colt Technology Services |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Commi Holdings Ltd |
| United Kingdom | GBR | FREEPHONE | 234 | — | Communications Networking Services (UK) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN, VOIP | 234 | — | Connect Telecom UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Content Guru Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PAGING, PERSONAL | 234 | — | Core Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PAGING, PERSONAL | 234 | 03 | Core Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | DIDWW Ireland Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | DRD Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Daisy Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Daotec Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Dial 9 Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN, VOIP | 234 | — | Digital Mail Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Digital Select Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Digitech Solutions Global Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Dynamic Mobile Billing Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, MSRN | 234 | — | EE Limited ( TM) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, MSRN | 234 | 30 | EE Limited ( TM) |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN, MOBILE, MSRN, PAGING, WIRELESS_GEOGRAPHIC | 234 | — | EE Limited (Orange) |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN, MOBILE, MSRN, PAGING, WIRELESS_GEOGRAPHIC | 234 | 33 | EE Limited (Orange) |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | ESAT Telecommunications (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL | 234 | — | ETC Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Easynet Enterprise Services Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Eckoh UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Eircom (UK) Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Elitetele.com plc |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | FUSION TELECOM LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL | 234 | — | Firstsound Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, MOBILE, PERSONAL | 234 | — | FleXtel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, MOBILE, PERSONAL | 234 | 17 | FleXtel Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Floren Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Fuse 2 Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | GCI Network Solutions Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | — | Gamma Telecom Holdings Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | 39 | Gamma Telecom Holdings Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Gencom Technologies Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Global Electroteks Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | HAVENSTOKE COMMUNICATIONS LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | HighSpeed Office Limited |
| United Kingdom | GBR | FREEPHONE, UAN | 234 | — | Hutchison 3G UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN, VOIP | 234 | — | I.T Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | ICUK Computing Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | IM Software Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | INFERNO COMMUNICATIONS LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | IOVOX Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | IP Voice Networks Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | IPV6 Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, UAN | 234 | — | IV Response Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Idt Global Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | InTouch Communication Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Inet Telecoms Ltd (Voipfone) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Infinity Tracking Ltd |
| United Kingdom | GBR | FREEPHONE | 234 | — | Instafone Plc |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Internet of Things Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Internexus Networks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Invade International Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Invoco Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Invosys Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | — | JT (Jersey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | 50 | JT (Jersey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Jtec UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | KCOM Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | KDDI Europe Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Kalnet4U Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, UAN | 234 | — | Lanonyx Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Linear Telecoms Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | LinkUP Mitaka Ltd - T/A The Big Word |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Liquid 11 Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Localphone Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | London Central Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Lycatel (Ireland) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | M247 Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | M3st Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, VOIP | 234 | — | MANX TELECOM TRADING LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN, VOIP | 234 | — | Magrathea Telecommunications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | — | Marathon Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PERSONAL | 234 | 28 | Marathon Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL | 234 | — | Mars Communications Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Maximus Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Media Hawk Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PAGING, PERSONAL | 234 | — | Media Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Mi Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Microtalk Europe Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Minotaur Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Mintaka Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | NBCN Networks Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | NFON UK Ltd. |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, PERSONAL | 234 | — | Nationwide Telephone Assistance Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, PERSONAL | 234 | 39 | Nationwide Telephone Assistance Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Need More Time Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Net-Work Internet Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Networks Direct plc |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Neutrino Networks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | New Call Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Newtel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Nexbridge Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Nextec UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Nexus Telecommunications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Node4 Ltd. |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | Nodemax Limited |
| United Kingdom | GBR | FREEPHONE, UAN | 234 | — | Nowtel Wholesale Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Number Services Ltd. |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Number Solutions Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Numbergroup Network Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Numbers Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | OVH Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Odigo |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, UAN | 234 | — | One Network Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Onvoy Communications Ltd. |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC | 234 | — | Opex Hosting Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Orange Business Holdings UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Orbtalk Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | PCI-PAL (UK) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | PEERLESS NETWORK UK LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC | 234 | — | Park Now Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Patoy Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, UAN | 234 | — | Phone Buddy Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Phone Co-Op Numbering Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Pipex Communications PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Planet Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, PAGING, PERSONAL, UAN | 234 | — | Plus Telecom Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | PlusNet PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Premier Voicemail Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Promotions4All Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Public Internet Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Pulsant (Scotland) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC | 234 | — | Real Telekom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Reality Network Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Redcentric Solutions Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Redwood Technologies Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Relax Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Resilient PLC |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Resource Utilities Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Rojo Trading Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | SMARTVOICE LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, UAN | 234 | — | Sark Telecom B.V. |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN, VOIP | 234 | — | Served Up Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Sesui Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | SiPalto Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Sigma Voice Solutions Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | Simwood eSMS Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Six Degrees Technology Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, MSRN | 234 | — | Sky UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, MSRN | 234 | 57 | Sky UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Solutios Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PAGING, PERSONAL | 234 | — | Sound Advertising Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE, PAGING, PERSONAL | 234 | 55 | Sound Advertising Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | Spacetel UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE | 234 | — | Spitfire Network Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE | 235 | 08 | Spitfire Network Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Square 1 Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | Square Systems Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Star Europe Ltd |
| United Kingdom | GBR | FREEPHONE, MOBILE, MSRN, WIRELESS_GEOGRAPHIC | 234 | — | Stour Marine Limited |
| United Kingdom | GBR | FREEPHONE, MOBILE, MSRN, WIRELESS_GEOGRAPHIC | 234 | 24 | Stour Marine Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Stream Live Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Subtopia |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Supported Business Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, MSRN, WIRELESS_GEOGRAPHIC | 234 | — | Sure (Guernsey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, MSRN, WIRELESS_GEOGRAPHIC | 234 | 55 | Sure (Guernsey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Suretec Systems Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | Swiftnet Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, PAGING | 234 | — | Syntec Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, PAGING | 234 | 37 | Syntec Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | TAP GATEWAY LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | TELNYX UK LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | TGL Services (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | TTNC Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Tabsoft Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Talk Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, PERSONAL | 234 | — | TalkTalk Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, PERSONAL | 234 | 16 | TalkTalk Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE, MSRN | 234 | — | Tango Networks UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE, MSRN | 234 | 53 | Tango Networks UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, MOBILE | 234 | — | Tata Communications (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, MOBILE | 234 | 27 | Tata Communications (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Technology Distribution Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | TelNG Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | TelXL Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Telappliant Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE | 234 | — | TeleWare Group PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE | 234 | 19 | TeleWare Group PLC |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Telecom Express Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, UAN | 234 | — | Telecom2 Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | TelecomIQ Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Telecoms World PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Telefonica UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL | 234 | — | Telephone Box Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Telesoft Technologies Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, VOIP | 234 | — | The Excell Group Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | The Number (UK) Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Third Party Formations Limited TA The Company Warehouse |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Timico Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Timico Partner Services Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL | 234 | — | Tiscali UK Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Transaction Network Services (UK) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Twelve Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Twilio Ireland Limited |
| United Kingdom | GBR | FREEPHONE, UAN, MOBILE | 234 | — | UK Broadband Limited |
| United Kingdom | GBR | FREEPHONE, UAN, MOBILE | 234 | 51 | UK Broadband Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL | 234 | — | UK Number Store Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | VOXYONDER NETWORK SERVICES UK LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE | 234 | — | Vectone Mobile Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE | 234 | 01 | Vectone Mobile Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Verizon UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Virgin Media Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Virtual Talk Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Visional Media Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | VoIP-Un Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | Vocalis Telecom |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Vodafone Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Vodafone Ltd (C&W) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Voice Simplified Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | VoiceHost Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Voiceflex Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | Voicetec Systems Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE | 234 | — | Voxbone SA |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, MOBILE | 234 | 39 | Voxbone SA |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | WAVECREST NETWORKS LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | WELLTEL (UK) LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | WIGHTFIBRE LIMITED |
| United Kingdom | GBR | FREEPHONE, IPRS, UAN | 234 | — | Wavenet UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | West Cloud Contact Solutions Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Windsor Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP | 234 | — | X-on Health Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Xoom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | XoverX Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS | 234 | — | Zamir Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Zapappi Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, UAN | 234 | — | Zestel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE | 234 | — | Ziron Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE | 234 | 39 | Ziron Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, PERSONAL | 234 | — | i.net communications Group PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, PERSONAL | 234 | 24 | i.net communications Group PLC |
| United Kingdom | GBR | FREEPHONE | 234 | — | iHub 2 Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | 9EONS LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | AI Comms Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | AVCOne Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Annecto Telecom |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Antheus Telecom Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | — | BT OnePhone Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | 08 | BT OnePhone Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Beaming Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | BlueWave Communications |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Business Telecom Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | CINOS LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Central Technology Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Cloud9 Communications Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Comms Consulting Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Dark Group Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Direct Market Solutions Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | EG TECHNOLOGIES LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Entanet International Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Essensys Ltd |
| United Kingdom | GBR | GEOGRAPHIC, VOIP | 234 | — | Exa Networks Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Exponential-e Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Firstcom Europe UK Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Fluency Communications Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Foehn Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | GO Internet Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Glide Student and Residential Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, MOBILE, UAN | 234 | — | Global Reach Networks Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Group 3 Technology Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Hello Telecom (UK) Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Hyperoptic Ltd |
| United Kingdom | GBR | GEOGRAPHIC, IPRS | 234 | — | ICC Networks Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | IP Wholesale Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Intercity Telecom Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Internetty Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | JAINTEL LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, MOBILE | 234 | — | JT (Guernsey) Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, MOBILE | 234 | 50 | JT (Guernsey) Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Jurassic Fibre Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Metronet (UK) Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Mission Labs Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Nectar Cloud |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Netfuse Telecom Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Network Rail Infrastructure Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | NewVoiceMedia Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Orbital Net Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Pebbletree Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Powertel Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Pure-IP Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Red Matter Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Relish Networks PLC |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | SETERA UK LIMITED |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | SIPWHALE LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | SONA BUSINESS PVT. LTD. |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Sipcentric Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Spectrum Fibre Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, PAGING | 234 | — | Sure (Isle of Man) Ltd |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, PAGING | 234 | 36 | Sure (Isle of Man) Ltd |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | — | Sure (Jersey) Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | 55 | Sure (Jersey) Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Sysconfig Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | THE REAL PBX LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | TRUESPEED COMMUNICATIONS LTD |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | TelcoSwitch Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | TeleSurf Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, MOBILE, PERSONAL, UAN | 234 | — | Telecom 10 Ltd |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, UAN | 234 | — | Telemix Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN, MOBILE, MSRN | 234 | — | Telet Research (N.I.) Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN, MOBILE, MSRN | 235 | 88 | Telet Research (N.I.) Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Tesla Dynamic Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN, MOBILE, PERSONAL | 234 | — | Tismi BV |
| United Kingdom | GBR | GEOGRAPHIC, UAN, MOBILE, PERSONAL | 234 | 09 | Tismi BV |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | — | Truphone Ltd |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | 25 | Truphone Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Tuxtel Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | USIC INTERNET SERVICES LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | VTSL Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Voiceserve Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Vonage Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Whypay Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Wi-Manx Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Wizaner Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | YEMOT HAMOSHIACH UK LTD |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | YayYay Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | York Data Services Ltd |
| United Kingdom | GBR | IPRS | 234 | — | 0Bit Limited |
| United Kingdom | GBR | IPRS | 234 | — | 2 Ergo Limited |
| United Kingdom | GBR | IPRS | 234 | — | Caladan Communications Limited |
| United Kingdom | GBR | IPRS, PERSONAL | 234 | — | FEBO Telecom Limited |
| United Kingdom | GBR | IPRS | 234 | — | Faxtastic Limited |
| United Kingdom | GBR | IPRS | 234 | — | Fubra Limited |
| United Kingdom | GBR | IPRS | 234 | — | Funview Limited |
| United Kingdom | GBR | IPRS, UAN | 234 | — | Hospedia Limited |
| United Kingdom | GBR | IPRS | 234 | — | Noble Tel |
| United Kingdom | GBR | IPRS | 234 | — | Nova Telecom Ltd |
| United Kingdom | GBR | IPRS | 234 | — | Orca Digital Limited |
| United Kingdom | GBR | IPRS | 234 | — | Premiere Communications Inc |
| United Kingdom | GBR | IPRS, PERSONAL | 234 | — | Sentiro Limited |
| United Kingdom | GBR | IPRS | 234 | — | SpeakUp BV |
| United Kingdom | GBR | IPRS, UAN | 234 | — | Sports Tel Ltd |
| United Kingdom | GBR | IPRS, UAN | 234 | — | TRISTAR TELECOM LIMITED |
| United Kingdom | GBR | IPRS | 234 | — | Telconline Inc |
| United Kingdom | GBR | IPRS | 234 | — | Telestream Communications UK Limited |
| United Kingdom | GBR | IPRS | 234 | — | Vodafone Ltd (Thus) |
| United Kingdom | GBR | IPRS | 234 | — | Westend Telecoms ltd |
| United Kingdom | GBR | MOBILE | 234 | — | Ace Call Limited |
| United Kingdom | GBR | MOBILE | 234 | — | Andrews & Arnold Ltd |
| United Kingdom | GBR | MOBILE, PAGING | 234 | — | Confabulate Limited |
| United Kingdom | GBR | MOBILE | 234 | — | Core Communication Services Ltd |
| United Kingdom | GBR | MOBILE, WIRELESS_GEOGRAPHIC | 234 | — | Guernsey Airtel Limited |
| United Kingdom | GBR | MOBILE | 234 | — | Telecom North America Mobile Inc |
| United Kingdom | GBR | PAGING, PERSONAL | 234 | — | M P Tanner Limited t/a FIO Telecom |
| United Kingdom | GBR | PAGING | 234 | — | Pageone Communications Limited |
| United Kingdom | GBR | PERSONAL | 234 | — | 4D Interactive Ltd |
| United Kingdom | GBR | PERSONAL | 234 | — | Telecoms Cloud Networks Limited |
| United Kingdom | GBR | PERSONAL | 234 | — | Windsor Telecom PLC |
| United Kingdom | GBR | UAN | 234 | — | 2Abroad Limited |
| United Kingdom | GBR | UAN | 234 | — | Accounts Centre Limited |
| United Kingdom | GBR | UAN | 234 | — | Atmoso Limited |
| United Kingdom | GBR | UAN | 234 | — | COMMUNITY FIBRE LIMITED |
| United Kingdom | GBR | UAN | 234 | — | DID Universe LLC |
| United Kingdom | GBR | UAN | 234 | — | Fair Isaac (Adeptra) ltd |
| United Kingdom | GBR | UAN | 234 | — | Ghost Telecom Limited |
| United Kingdom | GBR | UAN | 234 | — | HulloMail Limited |
| United Kingdom | GBR | UAN | 234 | — | Infinitel Communications Limited |
| United Kingdom | GBR | UAN | 234 | — | NETOMNIA LIMITED |
| United Kingdom | GBR | UAN | 234 | — | Odyssey Systems Ltd |
| United Kingdom | GBR | UAN | 234 | — | Orderly Telecoms Limited |
| United Kingdom | GBR | UAN | 234 | — | Oscatel Ltd |
| United Kingdom | GBR | UAN | 234 | — | PAYMENT WORLD LTD |
| United Kingdom | GBR | UAN | 234 | — | Retail Technology Services Ltd |
| United Kingdom | GBR | UAN | 234 | — | T4COM LTD |
| United Kingdom | GBR | UAN | 234 | — | Talk.to FZC |
| United Kingdom | GBR | UAN | 234 | — | Teledesign Solutions Limited |
| United Kingdom | GBR | UAN | 234 | — | Vox Sciences Limited |
| United Kingdom | GBR | UAN | 234 | — | Voxsmart Ltd |
| United Kingdom | GBR | UAN | 234 | — | WIDEFM LIMITED |
| United Kingdom | GBR | UAN, VOIP | 234 | — | Zen Internet Limited |
| United Kingdom | GBR | UAN | 234 | — | alwaysON Ltd |
| United Kingdom | GBR | VOIP | 234 | — | 42 Telecom UK Limited |
| United Kingdom | GBR | MOBILE, MSRN, WIRELESS_GEOGRAPHIC | 234 | 03 | Jersey Airtel Limited |
| United Kingdom | GBR | MOBILE | 234 | 04 | WAVE MOBILE LTD |
| United Kingdom | GBR | PERSONAL | 234 | 05 | Colt Technology Services Ltd |
| United Kingdom | GBR | MOBILE, MSRN, PAGING, PERSONAL | 234 | 10 | Telefonica UK (Virgin Media O2) |
| United Kingdom | GBR | MOBILE | 234 | 14 | LINK MOBILITY UK LTD (HSL) |
| United Kingdom | GBR | MOBILE, MSRN, PAGING, PERSONAL | 234 | 15 | VODAFONE LIMITED |
| United Kingdom | GBR | FREEPHONE | 234 | 18 | WIRELESS LOGIC LIMITED |
| United Kingdom | GBR | MOBILE | 234 | 18 | Cloud9 Mobile Communications Ltd |
| United Kingdom | GBR | MOBILE, MSRN | 234 | 20 | Hutchison 3G (Three) |
| United Kingdom | GBR | MOBILE | 234 | 22 | Telesign Mobile Limited |
| United Kingdom | GBR | MOBILE | 234 | 26 | Lycamobile UK Limited |
| United Kingdom | GBR | MOBILE, PERSONAL | 234 | 29 | (aq) Limited trading as aql |
| United Kingdom | GBR | MOBILE | 234 | 37 | Synectiv Ltd |
| United Kingdom | GBR | MOBILE | 234 | 39 | Anywhere Sim Limited |
| United Kingdom | GBR | MOBILE | 234 | 40 | Mass Response Service GmbH |
| United Kingdom | GBR | MOBILE | 234 | 42 | Lancelot UK |
| United Kingdom | GBR | MOBILE | 234 | 56 | CESG |
| United Kingdom | GBR | MOBILE, MSRN, PAGING | 234 | 58 | Manx Telecom Limited |
| United Kingdom | GBR | MOBILE | 234 | 71 | Home Office |
| United Kingdom | GBR | MOBILE | 234 | 72 | Hanhaa Limited |
| United Kingdom | GBR | MOBILE | 234 | 73 | AQL Wholesale Ltd |
| United Kingdom | GBR | PAGING, WIRELESS_GEOGRAPHIC | 234 | 73 | Bluewave Communications Limited |
| United Kingdom | GBR | MOBILE | 234 | 74 | Pareteum Europe B.V. |
| United Kingdom | GBR | MOBILE | 234 | 78 | Airwave Solutions Ltd |
| United Kingdom | GBR | MOBILE | 234 | 87 | LEBARA MOBILE LIMITED |
| United Kingdom | GBR | MOBILE | 235 | 04 | University Of Strathclyde |