United Kingdom

Number Code Allocated To Number Length Notes
01577 20xxxx Opal Telecom Limited 4+6 F-Digit '8'
01577 21xxxx Telephony Services Limited 4+6 F-Digit '2'
01577 22xxxx Net-Work Internet Ltd 4+6 F-Digit '2'
01577 23xxxx O-Bit Telecom Limited 4+6 F-Digit '7'
01577 24xxxx Telecom2 Ltd 4+6 F-Digit '6'
01577 25xxxx Primus Telecommunications 4+6 F-Digit '1'
01577 26xxxx Timico Limited 4+6 F-Digit '8'
01577 27xxxx Telswitch Limited 4+6 F-Digit '0'
01577 28xxxx Switch Services Ltd 4+6 F-Digit '0'
01577 29xxxx Starcomm Ltd 4+6 F-Digit '0'
01577 30xxxx Danemere Street Creative 4+6
01577 31xxxx Syntec UK Ltd 4+6 F-Digit '2'
01577 32xxxx Virgin Media Limited 4+6 F-Digit '4,5'
01577 33xxxx Gamma Telecom Holdings Ltd 4+6
01577 34xxxx C3 Europe Limited 4+6 F-Digit '7'
01577 35xxxx Inclarity plc 4+6 F-Digit '2'
01577 36xxxx TelNG Limited 4+6 F-Digit '2'
01577 37xxxx FleXtel Limited 4+6
01577 38xxxx Frontier Systems Ltd 4+6
01577 39xxxx Coralbridge Ltd 4+6 F-Digit '0'
01577 40xxxx Cable and Wireless (Energis) 4+6 F-Digit '1'
01577 41xxxx Voxbone SA 4+6 F-Digit '8'
01577 42xxxx 3C Limited 4+6 F-Digit '2'
01577 43xxxx Solutios Limited 4+6 F-Digit '2'
01577 44xxxx Known Future Limited 4+6 F-Digit '0'
01577 45xxxx Lumison Limited 4+6
01577 46xxxx IPV6 Limited 4+6 F-Digit '0'
01577 47xxxx Mars Communications Limited 4+6 F-Digit '0'
01577 48xxxx Instant Telecommunications Ltd 4+6 F-Digit '0'
01577 49xxxx Nexus Telecommunications plc 4+6 F-Digit '0'
01577 50xxxx Mundio Mobile Limited 4+6 F-Digit '6'
01577 51xxxx CFL Communications Limited 4+6 F-Digit '0'
01577 60xxxx Orange Home UK Plc 4+6 F-Digit '0'
01577 61xxxx LogicStar Limited 4+6
01577 62xxxx VoIP-Un Limited 4+6 F-Digit '0'
01577 63xxxx Teledesign plc 4+6 F-Digit '2'
01577 64xxxx Net Solutions Europe Limited 4+6 F-Digit '4'
01577 65xxxx Skycom Ltd 4+6 F-Digit '2'
01577 66xxxx Freshtel UK Limited 4+6 F-Digit '7'
01577 67xxxx Edge Telecom Ltd 4+6 F-Digit '0'
01577 68xxxx T.T.N.C. Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9'
01577 69xxxx InTechnology Plc 4+6 F-Digit '2'
01577 80xxxx Affiniti Integrated Solutions Ltd 4+6
01577 81xxxx Localphone Limited 4+6 F-Digit '0'
01577 82xxxx Nationwide Telephone Assistance Ltd 4+6 F-Digit '0'
01577 83xxxx BT 4+6
01577 83xxxx ESGLF BT, Glenfarg (Tayside) 4+6
01577 84xxxx BT 4+6
01577 84xxxx ESFOS BT, Fossoway (Tayside) 4+6
01577 85xxxx BT 4+6
01577 85xxxx ESCLH BT, Cleish Hills (Perth & Kinross) 4+6
01577 86xxxx BT 4+6
01577 86xxxx ESKIN BT, Kinross (Tayside) 4+6
01577 87xxxx Spitfire Network Services Ltd 4+6 F-Digit '7'
01577 88xxxx Thus Plc 4+6
01577 89xxxx Magrathea Telecommunications Limited 4+6