United Kingdom

Number Code Allocated To Number Length Notes
01644 20xxxx T.T.N.C. Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9'
01644 21xxxx Orange Home UK Plc 4+6 F-Digit '0'
01644 22xxxx TelNG Limited 4+6 F-Digit '2'
01644 23xxxx Opal Telecom Limited 4+6 F-Digit '8'
01644 24xxxx Localphone Limited 4+6 F-Digit '0'
01644 25xxxx Teledesign plc 4+6 F-Digit '2'
01644 26xxxx Skycom Ltd 4+6 F-Digit '2'
01644 27xxxx Coralbridge Ltd 4+6 F-Digit '0'
01644 28xxxx VoIP-Un Limited 4+6 F-Digit '0'
01644 29xxxx InTechnology Plc 4+6 F-Digit '2'
01644 30xxxx Telephony Services Limited 4+6 F-Digit '2'
01644 31xxxx Telecom2 Ltd 4+6 F-Digit '6'
01644 32xxxx Timico Limited 4+6 F-Digit '8'
01644 33xxxx Net-Work Internet Ltd 4+6 F-Digit '3'
01644 34xxxx Telswitch Limited 4+6 F-Digit '0'
01644 35xxxx Frontier Systems Ltd 4+6 F-Digit '3'
01644 36xxxx Starcomm Ltd 4+6 F-Digit '0'
01644 37xxxx Voxbone SA 4+6 F-Digit '8'
01644 38xxxx 3C Limited 4+6 F-Digit '2'
01644 39xxxx Known Future Limited 4+6 F-Digit '8'
01644 40xxxx Magrathea Telecommunications Limited 4+6
01644 41xxxx LogicStar Limited 4+6
01644 42xxxx BT 4+6
01644 43xxxx BT 4+6
01644 44xxxx BT 4+6
01644 45xxxx BT 4+6
01644 46xxxx BT 4+6
01644 47xxxx BT 4+6
01644 48xxxx Virgin Media Limited 4+6 F-Digit '4,5'
01644 49xxxx Colloquium Ltd 4+6 F-Digit '1'
01644 50xxxx Solutios Limited 4+6 F-Digit '2'
01644 51xxxx O-Bit Telecom Limited 4+6 F-Digit '7'
01644 52xxxx Mars Communications Limited 4+6 F-Digit '0'
01644 53xxxx IPV6 Limited 4+6 F-Digit '0'
01644 54xxxx Telecoms World Direct Ltd 4+6 F-Digit '0'
01644 55xxxx Instant Telecommunications Ltd 4+6 F-Digit '0'
01644 56xxxx Nexus Telecommunications plc 4+6 F-Digit '0'
01644 57xxxx Mundio Mobile Limited 4+6 F-Digit '6'
01644 58xxxx CFL Communications Limited 4+6 F-Digit '0'
01644 59xxxx Known Communications Limited 4+6 F-Digit '0'
01644 60xxxx Danemere Street Creative 4+6 F-Digit '2'
01644 70xxxx Cable and Wireless (Energis) 4+6
01644 71xxxx Gamma Telecom Holdings Ltd 4+6
01644 72xxxx C3 Europe Limited 4+6 F-Digit '4'
01644 73xxxx Net Solutions Europe Limited 4+6
01644 74xxxx Edge Telecom Ltd 4+6
01644 75xxxx Syntec UK Ltd 4+6
01644 76xxxx Freshtel UK Limited 4+6 F-Digit '7'
01644 77xxxx FleXtel Limited 4+6
01644 78xxxx Inclarity plc 4+6 F-Digit '2'
01644 79xxxx Spitfire Network Services Ltd 4+6 F-Digit '7'