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 | MOBILE, FREEPHONE, GEOGRAPHIC | 204 | 07 | Tata Communications (UK) Limited |
| United Kingdom | GBR | MOBILE, FREEPHONE, GEOGRAPHIC | 234 | — | Tata Communications (UK) Limited |
| United Kingdom | GBR | MOBILE | 232 | 17 | Mass Response Service GmbH |
| United Kingdom | GBR | MOBILE | 234 | — | Mass Response Service GmbH |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | (AQ) LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 73 | (AQ) LIMITED |
| United Kingdom | GBR | FREEPHONE | 234 | — | 001 International Telecom |
| United Kingdom | GBR | FREEPHONE, SHARED_COST | 234 | — | 08 Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, MOBILE, SHARED_COST | 234 | — | 08Direct Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | 10ACT Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | 24 Seven Cloud Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PAGING, PERSONAL, SHARED_COST, UAN, VOIP, MOBILE | 234 | — | 24 Seven Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PAGING, PERSONAL, SHARED_COST, UAN, VOIP, MOBILE | 234 | 55 | 24 Seven Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | 4D Interactive Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST | 234 | — | 8x8 Communications CX Solutions LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | 8x8 Communications UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | 8x8 UK Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, SHARED_COST | 234 | — | A2B Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, MOBILE | 234 | — | AQL Wholesale Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, MOBILE | 234 | 73 | AQL Wholesale Ltd |
| United Kingdom | GBR | FREEPHONE | 234 | — | ATH LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Adepteo Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Admiral Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Adviqo UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Alnitak GmbH |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Aloha Telecommunications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Alphatalk Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Andrews & Arnold (Numbers) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, MOBILE | 234 | — | Andrews & Arnold Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN, VOIP, MOBILE | 234 | 24 | Andrews & Arnold Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Atlantic Communications Corp Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST | 234 | — | Atlas Interactive Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN, VOIP | 234 | — | Atomstream Limited |
| United Kingdom | GBR | FREEPHONE, IPRS | 234 | — | BCH Digital Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | BT |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Babble Cloud (SUI) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Barritec Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | Barritel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Belgacom International Carrier Services SA |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | Bicom Systems EURL |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Bink Broadband Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Budget Numbers Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Business Broadcast Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Buzz Networks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, VOIP | 234 | — | C2C Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | CALLABLE LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | CFL Communications Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Call Stream Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Callitech Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | Callmonitor Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Calltracks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Ccpro Solutions Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Chess Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Cirrus Connects Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | Citrus Telecommunications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 24 | Citrus Telecommunications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 39 | Citrus Telecommunications Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | City Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Cloud Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Cloudcall Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Club Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | Colt Technology Services |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Commi Holdings Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Communications Networking Services (UK) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | Connect Telecom UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Content Guru Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Continuity Assured Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | — | Core Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | DIDWW Ireland Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | DRD Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Daisy Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Daotec Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Datazero Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Dial 9 Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | Digital Mail Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Digital Select Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Digital Space Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Digitech Solutions Global Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Dynamic Mobile Billing Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, MOBILE | 234 | — | EE Limited ( TM) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, MOBILE | 234 | 30 | EE Limited ( TM) |
| United Kingdom | GBR | FREEPHONE, IPRS, PAGING, SHARED_COST, UAN, MOBILE | 234 | — | EE Limited (Orange) |
| United Kingdom | GBR | FREEPHONE, IPRS, PAGING, SHARED_COST, UAN, MOBILE | 234 | 33 | EE Limited (Orange) |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | ESAT Telecommunications (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST | 234 | — | ETC Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | EVE CONNECT LTD |
| United Kingdom | GBR | FREEPHONE | 234 | — | Eckoh UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Eircom (UK) Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Elitetele.Com Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | FLR Spectron Ltd |
| United Kingdom | GBR | FREEPHONE, SHARED_COST, UAN | 234 | — | FUSION TELECOM LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST | 234 | — | Firstsound Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP, MOBILE | 234 | — | Flextel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP, MOBILE | 234 | 24 | Flextel Limited |
| United Kingdom | GBR | FREEPHONE, SHARED_COST, UAN | 234 | — | Floren Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Fuse 2 Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | GCI Network Solutions Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | GTT-EMEA LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | Gamma Telecom Holdings Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 39 | Gamma Telecom Holdings Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Gencom Technologies Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Global Electroteks Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | HAVENSTOKE COMMUNICATIONS LTD |
| United Kingdom | GBR | FREEPHONE, UAN, MOBILE | 234 | — | Hutchison 3G UK Ltd |
| United Kingdom | GBR | FREEPHONE, UAN, MOBILE | 234 | 20 | Hutchison 3G UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | I.T Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | ICUK Computing Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | IDT Global Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | IM Software Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | INFERNO COMMUNICATIONS LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | IOVOX Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | IP Voice Networks Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, SHARED_COST, UAN | 234 | — | IV Response Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | InTouch Communication Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Inet Telecoms Ltd (Voipfone) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Infinity Tracking Ltd |
| United Kingdom | GBR | FREEPHONE | 234 | — | Instafone Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Internet of Things Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Internexus Networks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Invade International Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Invoco Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Invosys Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | JT (Jersey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 50 | JT (Jersey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Jtec UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | KCOM Group Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | KDDI Europe Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN, VOIP | 234 | — | Kalnet4U Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, MOBILE, SHARED_COST, UAN | 234 | — | Lanonyx Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Linear Telecoms Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | LinkUP Mitaka Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Liquid 11 Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Localphone Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | London Central Communications Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Lumen Technologies UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Lycatel (Ireland) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | M247 Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | M3st Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, Mobile, SHARED_COST, VOIP, MOBILE | 234 | — | MANX TELECOM TRADING LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, Mobile, SHARED_COST, VOIP, MOBILE | 234 | 58 | MANX TELECOM TRADING LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP, MOBILE | 234 | — | Magrathea Telecommunications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP, MOBILE | 234 | 24 | Magrathea Telecommunications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, SHARED_COST, UAN | 234 | — | Marathon Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, SHARED_COST | 234 | — | Mars Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Media Hawk Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PAGING, PERSONAL, SHARED_COST | 234 | — | Media Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Mi Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Microtalk Europe Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Minotaur Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Mintaka Limited |
| United Kingdom | GBR | FREEPHONE, UAN | 234 | — | NETAVO Global Data Services Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | NFON UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | Nationwide Telephone Assistance Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Need More Time Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Net-Work Internet Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Networks Direct Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Neutrino Networks Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | New Call Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | Newtel Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Nexbridge Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Nextec UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Nexus Telecommunications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Node4 Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, SHARED_COST, UAN | 234 | — | Nodemax Limited |
| United Kingdom | GBR | FREEPHONE, UAN | 234 | — | Nowtel Wholesale Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Number Services Ltd. |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Number Solutions Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Numbers Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Nuso Cloud UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | OVH Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Odigo |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | One Network Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Onvoy Communications Ltd. |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, 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, IPRS, SHARED_COST | 234 | — | Patoy Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Phone Buddy Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, PERSONAL, SHARED_COST, UAN | 234 | — | Phone Co-Op Numbering Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Pipex Communications PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Planet Telecom Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, PAGING, PERSONAL, SHARED_COST, UAN | 234 | — | Plus Telecom Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | PlusNet PLC |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Premier Voicemail Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Promotions4All Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Public Internet Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Pulsant (Scotland) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC | 234 | — | Real Telekom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Reality Network Services Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Redcentric Solutions Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Redwood Technologies Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Relax Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Resilient Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC | 234 | — | RingGo Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Rojo Trading Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | SMARTVOICE LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | SYNTURA GROUP LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, VOIP | 234 | — | Served Up Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | SiPalto Ltd |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST, UAN | 234 | — | Sigma Voice Solutions Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | Simple Call Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PERSONAL, SHARED_COST, UAN | 234 | — | Simwood eSMS Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Six Degrees Technology Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, MOBILE, SHARED_COST, UAN, MSRN | 234 | — | Sky UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, MOBILE, SHARED_COST, UAN, MSRN | 234 | 57 | Sky UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Solutios Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | — | Sound Advertising Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | Spacetel UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 24 | Spacetel UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, SHARED_COST, UAN | 234 | — | Spitfire Network Services Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Spoke (Interactive) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Square 1 Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | Square Systems Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Star Europe Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE, MSRN | 234 | — | Stour Marine Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE, MSRN | 234 | 24 | Stour Marine Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, UAN | 234 | — | Subtopia Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Supported Business Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE | 234 | — | Sure (Guernsey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE | 234 | 55 | Sure (Guernsey) Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Suretec Systems Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | Swiftnet Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 310 | 630 | Swiftnet Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PAGING, SHARED_COST, UAN | 234 | — | Syntec Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | TAP GATEWAY LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | TELNYX UK LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | TGL Services (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 55 | TGL Services (UK) Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | TTNC Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Tabsoft Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Talk Numbers Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | TalkTalk Communications Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE | 234 | — | Tango Networks UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN, MOBILE | 234 | 53 | Tango Networks UK Ltd |
| United Kingdom | GBR | FREEPHONE, SHARED_COST | 234 | — | Technology Distribution Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | TelNG Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | TelXL Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Telappliant Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, SHARED_COST, UAN | 234 | — | TeleWare Group Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | — | Telecom2 Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | TelecomIQ Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Telecoms World Direct Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Telecoms World Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | — | Telefonica UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | 10 | Telefonica UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST | 234 | — | Telephone Box Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 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, SHARED_COST | 234 | — | Third Party Formations Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 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, SHARED_COST, UAN | 234 | — | Twelve Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Twilio Ireland Limited |
| United Kingdom | GBR | FREEPHONE, MOBILE, UAN | 234 | — | UK BROADBAND LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL | 234 | — | UK Number Store Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | VOXYONDER NETWORK SERVICES UK LTD |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, MOBILE | 234 | — | Vectone Mobile Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, MOBILE | 234 | 30 | Vectone Mobile Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Verizon UK Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Virgin Media Limited |
| United Kingdom | GBR | FREEPHONE | 234 | — | Virtual Talk Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | Visional Media Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Visionate Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | VoIP-Un Limited |
| United Kingdom | GBR | FREEPHONE, IPRS, SHARED_COST | 234 | — | Vocalis Telecom |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | — | Vodafone Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, MOBILE, PAGING, PERSONAL, SHARED_COST, UAN | 234 | 15 | Vodafone Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Vodafone Ltd (C&W) |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Voice Simplified Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | VoiceHost Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Voiceflex Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | — | Voicetec Systems Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN, MOBILE | 234 | 24 | Voicetec Systems Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, MOBILE | 234 | — | Voxbone SA |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, MOBILE | 234 | 39 | Voxbone SA |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | WAVECREST NETWORKS LIMITED |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | WELLTEL (UK) LIMITED |
| United Kingdom | GBR | FREEPHONE, MOBILE | 234 | — | WIRELESS LOGIC LIMITED |
| United Kingdom | GBR | FREEPHONE, MOBILE | 234 | 18 | WIRELESS LOGIC LIMITED |
| United Kingdom | GBR | FREEPHONE, SHARED_COST, UAN | 234 | — | Wavenet UK Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | WightFibre Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, UAN | 234 | — | Windsor Telecom Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC | 234 | — | Wordwatch Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, SHARED_COST, UAN, VOIP | 234 | — | X-on Health Limited |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Xoom Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | XoverX Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, UAN | 234 | — | Zapappi Ltd |
| United Kingdom | GBR | FREEPHONE, GEOGRAPHIC, IPRS, PERSONAL, SHARED_COST, 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 | GEOGRAPHIC | 234 | — | 9EONS LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | AI Comms Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | AVC One Limited |
| 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 | 234 | — | Beaming Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Bink Networks Ltd |
| United Kingdom | GBR | GEOGRAPHIC, Mobile | 234 | — | BlueWave Communications Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Business Telecom Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | CINOS LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Central Technology Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Cloud9 Communications Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Comms Solutions Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Convergence Group (wireless) Networks Limited |
| United Kingdom | GBR | GEOGRAPHIC, SHARED_COST, 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 (UK) Limited |
| 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 Limited |
| United Kingdom | GBR | GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Fluency Communications Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | GO Internet Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Glide Student and Residential Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, SHARED_COST, UAN | 234 | — | Global Reach Networks Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Group 3 Technology Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | — | Guernsey Airtel Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | 03 | Guernsey Airtel Limited |
| United Kingdom | GBR | GEOGRAPHIC, SHARED_COST, UAN | 234 | — | Hello Telecom (UK) Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Hyperoptic Ltd |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, SHARED_COST | 234 | — | ICC Networks Ltd |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | INTELLIGENT EXCHANGES LIMITED |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | INTERCITY TECHNOLOGY LIMITED |
| 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, MOBILE, MSRN | 234 | — | Jersey Airtel Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, MSRN | 234 | 03 | Jersey Airtel Limited |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Jurassic Fibre Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | KERV EXPERIENCE LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Mission Labs Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Nebula Cloud Limited |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Nectar Cloud Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | Netfuse Telecom Ltd |
| United Kingdom | GBR | GEOGRAPHIC | 234 | — | OME LOGIC LTD |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Orbital Net Limited |
| 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, SHARED_COST, UAN | 234 | — | Red Matter Limited |
| 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, MOBILE | 234 | — | Sure (Isle of Man) Limited |
| United Kingdom | GBR | GEOGRAPHIC, Mobile, MOBILE | 234 | 55 | Sure (Isle of Man) Limited |
| 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, MOBILE | 234 | — | TP GLOBAL OPERATIONS LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE | 234 | 25 | TP GLOBAL OPERATIONS LIMITED |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | TeleSurf Limited |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, MOBILE, PERSONAL, SHARED_COST, UAN | 234 | — | Telecom 10 Ltd |
| United Kingdom | GBR | GEOGRAPHIC, IPRS, SHARED_COST, UAN | 234 | — | Telemix Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, UAN | 234 | — | Telet Research (NI) Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, UAN | 234 | 55 | Telet Research (NI) Limited |
| United Kingdom | GBR | GEOGRAPHIC, MOBILE, PERSONAL, UAN | 234 | — | Tismi BV |
| United Kingdom | GBR | GEOGRAPHIC, UAN | 234 | — | Truespeed Communications 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, UAN | 234 | — | Vonage Business 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, SHARED_COST, UAN | 234 | — | Wifinity 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 Limited |
| United Kingdom | GBR | IPRS | 234 | — | 0Bit Limited |
| United Kingdom | GBR | IPRS, SHARED_COST | 234 | — | Caladan Communications Limited |
| United Kingdom | GBR | IPRS | 234 | — | Eagle Eye Solutions (North) Limited |
| United Kingdom | GBR | IPRS | 234 | — | Faxtastic Limited |
| United Kingdom | GBR | IPRS | 234 | — | Fonix PLC |
| United Kingdom | GBR | IPRS | 234 | — | Funview Limited |
| United Kingdom | GBR | IPRS | 234 | — | Noble Tel |
| United Kingdom | GBR | IPRS | 234 | — | Nova Telecom Ltd |
| United Kingdom | GBR | IPRS, PERSONAL, SHARED_COST | 234 | — | Sentiro Limited |
| United Kingdom | GBR | IPRS, SHARED_COST, UAN | 234 | — | Spark Technology Services Limited |
| United Kingdom | GBR | IPRS | 234 | — | SpeakUp BV |
| United Kingdom | GBR | IPRS, SHARED_COST, UAN | 234 | — | Sports Tel Ltd |
| United Kingdom | GBR | IPRS, SHARED_COST, UAN | 234 | — | TRISTAR TELECOM LIMITED |
| United Kingdom | GBR | IPRS | 234 | — | Telconline Inc |
| United Kingdom | GBR | IPRS, SHARED_COST | 234 | — | Telestream Communications UK Limited |
| United Kingdom | GBR | IPRS | 234 | — | Vodafone Ltd (Thus) |
| United Kingdom | GBR | IPRS, SHARED_COST | 234 | — | Westend Telecoms Ltd |
| United Kingdom | GBR | IPRS | 234 | — | Zamir Telecom Limited |
| United Kingdom | GBR | MOBILE | 234 | — | Airwave Solutions Limited |
| United Kingdom | GBR | MOBILE | 234 | 10 | Airwave Solutions Limited |
| United Kingdom | GBR | MOBILE | 234 | — | CIRCLES MVNE International B.V. |
| United Kingdom | GBR | MOBILE, PAGING | 234 | — | Confabulate Limited |
| United Kingdom | GBR | MOBILE | 234 | — | Core Communication Services Limited |
| United Kingdom | GBR | MOBILE | 234 | — | HSL Messaging Limited |
| United Kingdom | GBR | MOBILE | 234 | — | LEBARA MOBILE LIMITED |
| United Kingdom | GBR | MOBILE | 234 | — | Lycamobile (UK) Limited |
| United Kingdom | GBR | MOBILE | 234 | — | Synectiv Ltd |
| United Kingdom | GBR | MOBILE | 234 | — | Telesign Mobile Limited |
| United Kingdom | GBR | MOBILE | 234 | — | The National Cyber Security Centre |
| United Kingdom | GBR | MOBILE | 234 | — | University Of Strathclyde |
| United Kingdom | GBR | MOBILE | 234 | — | Wave Mobile Ltd |
| United Kingdom | GBR | MSRN | 234 | — | Telet Research (N.I.) Limited |
| 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, SHARED_COST | 234 | — | FEBO Telecom Limited |
| United Kingdom | GBR | SHARED_COST | 234 | — | Fubra Limited |
| United Kingdom | GBR | SHARED_COST | 234 | — | Premiere Communications Inc |
| 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 Services Limited |
| United Kingdom | GBR | UAN | 234 | — | Ghost Telecom Limited |
| United Kingdom | GBR | UAN | 234 | — | Infinitel Communications Limited |
| United Kingdom | GBR | UAN | 234 | — | Netomnia Limited |
| United Kingdom | GBR | UAN, VOIP | 234 | — | Network Rail Infrastructure 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 | — | Thumbtel Ltd |
| 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 | 234 | 10 | Virgin Mobile Telecoms Limited |
| United Kingdom | GBR | MSRN | 234 | 10 | Virgin Media O2 |
| United Kingdom | GBR | MSRN | 234 | 15 | Vodafone United Kingdom |
| United Kingdom | GBR | MOBILE | 234 | 20 | 3 United Kingdom |
| United Kingdom | GBR | MOBILE | 234 | 24 | Ace Call Ltd |
| United Kingdom | GBR | MOBILE | 234 | 24 | Premium Routing GmbH |
| United Kingdom | GBR | MOBILE | 234 | 30 | Home Office |
| United Kingdom | GBR | MSRN | 234 | 33 | EE Limited |
| United Kingdom | GBR | MOBILE | 234 | 39 | Anywhere Sim Limited |
| United Kingdom | GBR | MOBILE | 234 | 39 | Hanhaa Limited |
| United Kingdom | GBR | MSRN | 234 | 39 | Gamma Telecom Limited |
| United Kingdom | GBR | MSRN | 234 | 50 | JT |
| United Kingdom | GBR | MSRN | 234 | 53 | TANGO NETWORKS UK LTD |
| United Kingdom | GBR | MOBILE, MSRN | 234 | 55 | Sure Guernsey |
| United Kingdom | GBR | MOBILE, MSRN | 234 | 58 | Manx Telecom |
| United Kingdom | GBR | MOBILE | 310 | 840 | Telecom North America Mobile Inc |