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020 Area code operators - London, Ewell, Borehamwood, Loughton,...

Area code: 020

London, Ewell, Borehamwood, Loughton, Bushey, Chessington, Chigwell, Buckhurst Hill, Whyteleafe

020 30** 4D Interactive Ltd, 4Sight UK Ltd, Andrews & Arnold Ltd, Atlas Interactive Group Limited, BT, Cable & Wireless Plc, Callax Limited, Cheers International Sales Limited, CLEMCOM, Cobalt Telephone Technologies ...
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4D Interactive Ltd, 4Sight UK Ltd, Andrews & Arnold Ltd, Atlas Interactive Group Limited, BT, Cable & Wireless Plc, Callax Limited, Cheers International Sales Limited, CLEMCOM, Cobalt Telephone Technologies, COLT Telecommunications, Coms.Com Ltd, Digital Mail Limited, Eyetel Limited, Freshtel UK Limited, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Griffin Information Systems Ltd, InTechnology Plc, Invomo Ltd, Known Future Limited, Magrathea Telecommunications Limited, ntl Group Ltd, Orange Home UK Plc, PD Media Limited, Peerex Ltd, Plus Telecom Limited, PlusNet PLC, Protel UK Limited, Rija UK Ltd, Simwood eSMS Limited, Skycom Ltd, Skype Communications SA, Sound Telecom (UK) Ltd, Square Systems, Switch Services Ltd, Syntec UK Ltd, Teledesign plc, Telewest Communications Plc, TELSTRA EUROPE LIMITED, Thus Plc, Timico Limited, TWL Inbound Ltd, Vectone Network Limited, Verizon UK Ltd, Voicetec Systems Ltd, Wavecrest (UK) Ltd, YAC Ltd
020 31** 24 Seven Communications Ltd, Affiniti Integrated Solutions Ltd, ALLODOTCOM INC., Bestway Communications Ltd, BT, Cable & Wireless Plc, Callagenix Ltd, Calltracks Limited, Citrus Telecommunications Ltd, COLT Telecommunications ...
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24 Seven Communications Ltd, Affiniti Integrated Solutions Ltd, ALLODOTCOM INC., Bestway Communications Ltd, BT, Cable & Wireless Plc, Callagenix Ltd, Calltracks Limited, Citrus Telecommunications Ltd, COLT Telecommunications, Core Communication Services Ltd, Danemere Street Creative, Euro Andhra Limited, Excell Group Ltd, iHub Ltd, InTouch Communication Services Limited, Known Future Limited, Localphone Limited, London Central Communications Ltd, Lycatel (Ireland) Limited, Midi & Minerva Trading Company LLC, Nationwide Telephone Assistance Ltd, Net Solutions Europe Limited, Noo Mobile Ltd, Orange Home UK Plc, QiComm Ltd, Redstone Communications Ltd, Spitfire Network Services Ltd, Stardex (UK) Ltd, T.T.N.C. Limited, Teamphone Limited, Tele-Lynx (UK) Limited, Teledesign plc, Telephony Services Limited, Telewest Communications Plc, TELSTRA EUROPE LIMITED, TG Support Limited, Thus Plc, Verizon UK Ltd, VTL (UK) Limited
020 32** BT, Cable & Wireless Plc, COLT Telecommunications, Easynet Group Plc, Interweb Design Ltd, Premier Voicemail Ltd, Primus Telecommunications, TelNG Limited, Your Communications Ltd, Zimo Communications Limited ...
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BT, Cable & Wireless Plc, COLT Telecommunications, Easynet Group Plc, Interweb Design Ltd, Premier Voicemail Ltd, Primus Telecommunications, TelNG Limited, Your Communications Ltd, Zimo Communications Limited
020 33** Affiniti Integrated Solutions Ltd, Annecto Telecom, Bicom Systems EURL, Bluecom (UK) Ltd, BT, BWR International Limited, Cable and Wireless (Energis), CFL Communications Limited, COLT Telecommunications, Content Guru Ltd ...
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Affiniti Integrated Solutions Ltd, Annecto Telecom, Bicom Systems EURL, Bluecom (UK) Ltd, BT, BWR International Limited, Cable and Wireless (Energis), CFL Communications Limited, COLT Telecommunications, Content Guru Ltd, Coralbridge Ltd, Entanet International Ltd, Esendex Limited, ETC Telecom Ltd, Exa Networks Limited, Frontier Systems Ltd, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, I Communicate Services Ltd, i-Net Communications Group Plc, Inclarity plc, INET Telecoms Ltd (Voipfone), IV Response Limited, Magrathea Telecommunications Limited, Medius Networks Limited, Need More Time Ltd, Net-Work Internet Ltd, Nexus Telecommunications plc, NPlusOne Limited, Opal Telecom Limited, Orange Home UK Plc, Orbis Telecom, PCB Consultancy Limited, Proton Telecom Limited, Reality Telecom plc, Skymaker Limited, Solutios Limited, Sound Advertising Ltd, Swiftnet Ltd, T.T.N.C. Limited, Teamphone Limited, Telappliant Ltd, Telewest Communications Plc, Telswitch Limited, TelXL Ltd, Thus Plc, Tiscali UK Limited, TRA (UK) LTD, Verizon UK Ltd, Via-Vox Limited, Vibe Communications Uk Ltd, VoIP-Un Limited, Voxbone SA, VoxDev Ltd, ZAF Telecom Ltd
020 34** COLT Telecommunications
020 70** Annecto Telecom, BIS Ltd, BON.net Limited, BT, Cable & Wireless Plc, Cable and Wireless (Energis), Centrica Telecommunications, COLT Telecommunications, Daotec Ltd, Digital Mail Limited ...
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Annecto Telecom, BIS Ltd, BON.net Limited, BT, Cable & Wireless Plc, Cable and Wireless (Energis), Centrica Telecommunications, COLT Telecommunications, Daotec Ltd, Digital Mail Limited, Easynet Telecommunications Ltd, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Global One Communications Holding Ltd, HighSpeed Office Limited, IDT Global Ltd, LTT PLC, Magrathea Telecommunications Limited, Medius Networks Limited, ntl Group Ltd, Prodigy Internet Ltd, Spitfire Network Services Ltd, Teledesign plc, Telewest Communications Plc, TELSTRA EUROPE LIMITED, Thus Plc, Verizon UK Ltd, Vital Phone Limited, Wavecrest (UK) Ltd, Wizaner Limited
020 71** Affiniti Integrated Solutions Ltd, BT, Cable & Wireless Plc, Cable and Wireless (Energis), Callmonitor Ltd, Centrica Telecommunications, Citrus Telecommunications Ltd, Colloquium Ltd, COLT Telecommunications, Coms.Com Ltd ...
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Affiniti Integrated Solutions Ltd, BT, Cable & Wireless Plc, Cable and Wireless (Energis), Callmonitor Ltd, Centrica Telecommunications, Citrus Telecommunications Ltd, Colloquium Ltd, COLT Telecommunications, Coms.Com Ltd, Digitech Solutions Global Limited, DRD Communications plc, FleXtel Limited, Fused Networks Limited, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Inclarity plc, Interweb Design Ltd, InTouch Communication Services Limited, Invomo Ltd, IV Response Limited, Known Future Limited, Lycatel (Ireland) Limited, Magrathea Telecommunications Limited, ntl Group Ltd, Positive Communication Limited, Primus Telecommunications, Puma Unified Communications Ltd, QiComm Ltd, Sala Limited, Skytel Ltd, Telco Global Networks Limited, Telephony Services Limited, Vectone Network Limited, Verizon UK Ltd, VODARE LTD, Webstar Limited, Windsor Telecom Plc, Xtec Communications Ltd, YAC Ltd
020 72** BT, Cable & Wireless Plc, Cable and Wireless (Energis), Global Crossing (UK) Ltd, ntl Group Ltd, Telewest Communications Plc
020 73** BT, Cable & Wireless Plc, COLT Telecommunications, ntl Group Ltd, Orange, Your Communications Ltd
020 74** BT, Cable & Wireless Plc, Citrus Telecommunications Ltd, Mars Communications Limited, ntl Group Ltd, Telewest Communications Plc
020 75** BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, KDDI Europe Limited, ntl Group Ltd, Telewest Communications Plc, Verizon UK Ltd
020 76** BT, Cable & Wireless Plc, COLT Telecommunications, Global One Communications Holding Ltd, ntl Group Ltd, Primus Telecommunications, Telewest Communications Plc, Verizon UK Ltd, Your Communications Ltd
020 77** Affiniti Integrated Solutions Ltd, BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Eircom UK Ltd, Invomo Ltd, ntl Group Ltd, Redstone Communications Ltd, Syntec UK Ltd ...
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Affiniti Integrated Solutions Ltd, BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Eircom UK Ltd, Invomo Ltd, ntl Group Ltd, Redstone Communications Ltd, Syntec UK Ltd, Tele2 UK Services Limited, Telewest Communications Plc, Thus Plc, Verizon UK Ltd, Your Communications Ltd
020 78** BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Internet Telecommunications Plc, ntl Group Ltd, Spacetel UK Ltd, Surelink Limited ...
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BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Internet Telecommunications Plc, ntl Group Ltd, Spacetel UK Ltd, Surelink Limited, Telewest Communications Plc, TELSTRA EUROPE LIMITED, Verizon UK Ltd, Your Communications Ltd
020 79** 4D Interactive Ltd, BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Easynet Group Plc, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Inclarity plc, NPlusOne Limited ...
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4D Interactive Ltd, BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Easynet Group Plc, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, Inclarity plc, NPlusOne Limited, ntl Group Ltd, O-Bit Telecom Limited, Opal Telecom Limited, SingTel (Europe) Limited, Teamphone Limited, Telewest Communications Plc, TELSTRA EUROPE LIMITED, United Connect Ltd, Verizon UK Ltd, Your Communications Ltd
020 80** Bethlehem Technologies London Limited, BT, Cable & Wireless Plc, COLT Telecommunications, Gamma Telecom Holdings Ltd, Gladstar Telecommunications Ltd, Impello Limited, InfoComm Consultancy Ltd, Known Future Limited, LTT PLC ...
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Bethlehem Technologies London Limited, BT, Cable & Wireless Plc, COLT Telecommunications, Gamma Telecom Holdings Ltd, Gladstar Telecommunications Ltd, Impello Limited, InfoComm Consultancy Ltd, Known Future Limited, LTT PLC, Magrathea Telecommunications Limited, Malvern Ventures Limited, Mistral Internet Group Ltd, Nowtel UK Ltd, Opal Telecom Limited, Pipemedia Ltd, Real Telekom Ltd, Talkline Communications Ltd, Telco Global Networks Limited, Teleasp.Net Limited, Teledesign plc, Telewest Communications Plc, TG Support Limited, Thus Plc, Total FM 2000 Ltd, Verizon UK Ltd, Vodafone Ltd, VTL (UK) Limited, Wavecrest (UK) Ltd
020 81** Affiniti Integrated Solutions Ltd, Anycall Ltd, BT, Cable & Wireless Plc, Connect Telecom UK Ltd, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, GMK Telecom Limited, HighSpeed Office Limited, InTechnology Plc ...
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Affiniti Integrated Solutions Ltd, Anycall Ltd, BT, Cable & Wireless Plc, Connect Telecom UK Ltd, Gamma Telecom Holdings Ltd, Global Crossing (UK) Ltd, GMK Telecom Limited, HighSpeed Office Limited, InTechnology Plc, Medius Networks Limited, Nexus Telecommunications plc, Noo Mobile Ltd, Opal Telecom Limited, Reality Telecom plc, Syntec UK Ltd, Telco Global Networks Limited, Verizon UK Ltd, Voiceserve Limited
020 82** BT, Cable & Wireless Plc, ntl Group Ltd, Orange, Telewest Communications Plc
020 83** BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, ntl Group Ltd, Telewest Communications Plc, Your Communications Ltd
020 84** BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Eircom UK Ltd, Gamma Telecom Holdings Ltd, KDDI Europe Limited, ntl Group Ltd, Premier Voicemail Ltd, Swiftnet Ltd ...
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BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, Eircom UK Ltd, Gamma Telecom Holdings Ltd, KDDI Europe Limited, ntl Group Ltd, Premier Voicemail Ltd, Swiftnet Ltd, Telewest Communications Plc, Thus Plc, United Connect Ltd, Your Communications Ltd
020 85** BT, Cable & Wireless Plc, Global Crossing (UK) Ltd, ntl Group Ltd, Telewest Communications Plc, Verizon UK Ltd
020 86** BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, DRD Communications plc, Inclarity plc, ntl Group Ltd, Opal Telecom Limited, QiComm Ltd, Streamdoor Limited ...
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BT, Cable & Wireless Plc, Cable and Wireless (Energis), COLT Telecommunications, DRD Communications plc, Inclarity plc, ntl Group Ltd, Opal Telecom Limited, QiComm Ltd, Streamdoor Limited, Syntec UK Ltd, Telewest Communications Plc, TELSTRA EUROPE LIMITED, Verizon UK Ltd, Wavecrest (UK) Ltd
020 87** Affiniti Integrated Solutions Ltd, Atlas Interactive Group Limited, BT, Cable & Wireless Plc, Cheers International Sales Limited, Easynet Telecommunications Ltd, Medius Networks Limited, ntl Group Ltd, Redstone Communications Ltd, Spinvox Ltd ...
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Affiniti Integrated Solutions Ltd, Atlas Interactive Group Limited, BT, Cable & Wireless Plc, Cheers International Sales Limited, Easynet Telecommunications Ltd, Medius Networks Limited, ntl Group Ltd, Redstone Communications Ltd, Spinvox Ltd, Syntec UK Ltd, Telewest Communications Plc, Verizon UK Ltd, Vital Phone Limited, Vivaline Communicaciones 2003 sl, Your Communications Ltd
020 88** 118 Limited, BT, Cable & Wireless Plc, Magrathea Telecommunications Limited, ntl Group Ltd, TELSTRA EUROPE LIMITED, Your Communications Ltd
020 89** BT, Cable & Wireless Plc, Global Crossing (UK) Ltd, Inclarity plc, ntl Group Ltd