United Kingdom

Number Code Allocated To Number Length Notes
01661 20xxxx Virgin Media Limited 4+6
01661 21xxxx BT 4+6
01661 22xxxx Syntec UK Ltd 4+6
01661 23xxxx Inclarity plc 4+6 F-Digit '2'
01661 24xxxx Orange Home UK Plc 4+6 F-Digit '0'
01661 25xxxx T.T.N.C. Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9'
01661 26xxxx Net Solutions Europe Limited 4+6 F-Digit '6'
01661 27xxxx Spitfire Network Services Ltd 4+6 F-Digit '7'
01661 28xxxx TelNG Limited 4+6 F-Digit '2'
01661 29xxxx Localphone Limited 4+6 F-Digit '0'
01661 30xxxx Frontier Systems Ltd 4+6 F-Digit '3'
01661 31xxxx Telephony Services Limited 4+6 F-Digit '2'
01661 32xxxx Skycom Ltd 4+6 F-Digit '2'
01661 33xxxx Teledesign plc 4+6 F-Digit '2'
01661 34xxxx Coralbridge Ltd 4+6 F-Digit '0'
01661 35xxxx O-Bit Telecom Limited 4+6 F-Digit '7'
01661 36xxxx InTechnology Plc 4+6 F-Digit '2'
01661 37xxxx VoIP-Un Limited 4+6 F-Digit '0'
01661 38xxxx Telecom2 Ltd 4+6 F-Digit '6'
01661 39xxxx Nationwide Telephone Assistance Ltd 4+6 F-Digit '0'
01661 40xxxx Timico Limited 4+6 F-Digit '8'
01661 41xxxx Telswitch Limited 4+6 F-Digit '0'
01661 42xxxx Starcomm Ltd 4+6 F-Digit '0'
01661 43xxxx Voxbone SA 4+6 F-Digit '8'
01661 44xxxx Net-Work Internet Ltd 4+6 F-Digit '4'
01661 45xxxx 3C Limited 4+6 F-Digit '2'
01661 46xxxx Known Future Limited 4+6 F-Digit '3'
01661 47xxxx Solutios Limited 4+6 F-Digit '2'
01661 48xxxx IPV6 Limited 4+6 F-Digit '0'
01661 49xxxx Mars Communications Limited 4+6 F-Digit '0'
01661 50xxxx Thus Plc 4+6
01661 5143xx NEPH BT, Prudhoe (Northumberland) 4+6
01661 5148xx NEP BT, Ponteland (Northumberland) 4+6
01661 5154xx NEP BT, Ponteland (Northumberland) 4+6
01661 5157xx NEPH BT, Prudhoe (Northumberland) 4+6
01661 51xxxx BT 4+6
01661 52xxxx Gamma Telecom Holdings Ltd 4+6
01661 53xxxx LogicStar Limited 4+6
01661 54xxxx TELSTRA EUROPE LIMITED 4+6
01661 55xxxx Affiniti Integrated Solutions Ltd 4+6
01661 56xxxx Edge Telecom Ltd 4+6
01661 57xxxx FleXtel Limited 4+6
01661 58xxxx Freshtel UK Limited 4+6
01661 59xxxx Opal Telecom Limited 4+6 F-Digit '8'
01661 60xxxx Instant Telecommunications Ltd 4+6 F-Digit '0'
01661 61xxxx Easynet Group Ltd 4+6 F-Digit '0'
01661 62xxxx Telecoms World Direct Ltd 4+6 F-Digit '0'
01661 63xxxx Switch Services Ltd 4+6 F-Digit '0'
01661 64xxxx Mundio Mobile Limited 4+6 F-Digit '6'
01661 65xxxx Nexus Telecommunications plc 4+6 F-Digit '0'
01661 66xxxx CFL Communications Limited 4+6 F-Digit '0'
01661 68xxxx Known Communications Limited 4+6 F-Digit '0'
01661 70xxxx Danemere Street Creative 4+6 F-Digit '2'
01661 80xxxx Cable & Wireless UK 4+6
01661 81xxxx Cable and Wireless (Energis) 4+6
01661 82xxxx BT 4+6
01661 82xxxx NEP BT, Ponteland (Northumberland) 4+6
01661 83xxxx BT 4+6
01661 83xxxx NEPH BT, Prudhoe (Northumberland) 4+6
01661 84xxxx BT 4+6
01661 84xxxx NESTK BT, Stocksfield (Northumberland) 4+6
01661 852xxx NEWYL BT, Wylam (Northumberland) 4+6
01661 855xxx NESTA BT, Stamfordham (Northumberland) 4+6
01661 856xxx NEWYL BT, Wylam (Northumberland) 4+6
01661 85xxxx BT 4+6
01661 86xxxx BT 4+6
01661 86xxxx NEP BT, Ponteland (Northumberland) 4+6
01661 87xxxx BT 4+6
01661 87xxxx NEP BT, Ponteland (Northumberland) 4+6
01661 881xxx NEBLS BT, Belsay (Northumberland) 4+6
01661 886xxx NESTA BT, Stamfordham (Northumberland) 4+6
01661 88xxxx BT 4+6
01661 89xxxx Magrathea Telecommunications Limited 4+6