United Kingdom

Number Code Allocated To Number Length Notes
01433 20xxxx Opal Telecom Limited 4+6 F-Digit '8'
01433 21xxxx Frontier Systems Ltd 4+6 F-Digit '3'
01433 22xxxx Teledesign plc 4+6 F-Digit '2'
01433 23xxxx Nationwide Telephone Assistance Ltd 4+6 F-Digit '0'
01433 24xxxx Coralbridge Ltd 4+6 F-Digit '0'
01433 25xxxx VoIP-Un Limited 4+6 F-Digit '0'
01433 26xxxx Timico Limited 4+6 F-Digit '8'
01433 27xxxx O-Bit Telecom Limited 4+6 F-Digit '7'
01433 28xxxx Telecom2 Ltd 4+6 F-Digit '6'
01433 29xxxx Telswitch Limited 4+6 F-Digit '0'
01433 30xxxx Syntec UK Ltd 4+6
01433 31xxxx Known Future Limited 4+6 F-Digit '1'
01433 32xxxx C3 Europe Limited 4+6 F-Digit '3'
01433 33xxxx Freshtel UK Limited 4+6 F-Digit '0'
01433 34xxxx Inclarity plc 4+6
01433 35xxxx T.T.N.C. Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9
01433 36xxxx Net Solutions Europe Limited 4+6 F-Digit '6'
01433 37xxxx Spitfire Network Services Ltd 4+6 F-Digit '7'
01433 38xxxx Orange Home UK Plc 4+6 F-Digit '0'
01433 39xxxx TelNG Limited 4+6 F-Digit '2'
01433 40xxxx LogicStar Limited 4+6
01433 41xxxx Inclarity plc 4+6
01433 42xxxx Telephony Services Limited 4+6 F-Digit '4'
01433 43xxxx Danemere Street Creative 4+6
01433 44xxxx Gamma Telecom Holdings Ltd 4+6
01433 45xxxx Virgin Media Limited 4+6 F-Digit '4,5'
01433 46xxxx Localphone Limited 4+6 F-Digit '0'
01433 47xxxx TELSTRA EUROPE LIMITED 4+6
01433 48xxxx Skycom Ltd 4+6 F-Digit '2'
01433 49xxxx FleXtel Limited 4+6
01433 50xxxx Net-Work Internet Ltd 4+6 F-Digit '0'
01433 51xxxx 3C Limited 4+6 F-Digit '2'
01433 52xxxx Voxbone SA 4+6 F-Digit '8'
01433 53xxxx Solutios Limited 4+6 F-Digit '2'
01433 54xxxx Affiniti Integrated Solutions Ltd 4+6 F-Digit '4,5'
01433 55xxxx IPV6 Limited 4+6 F-Digit '0'
01433 56xxxx Mars Communications Limited 4+6 F-Digit '0'
01433 57xxxx Instant Telecommunications Ltd 4+6 F-Digit '0'
01433 58xxxx Switch Services Ltd 4+6 F-Digit '0'
01433 59xxxx Nexus Telecommunications plc 4+6 F-Digit '0'
01433 60xxxx Cable & Wireless UK 4+6
01433 61xxxx InTechnology Plc 4+6 F-Digit '2'
01433 62xxxx BT 4+6
01433 62xxxx SLHO BT, Hope (Derbyshire) 4+6
01433 63xxxx BT 4+6
01433 63xxxx SLGD BT, Grindleford (Derbyshire) 4+6
01433 64xxxx Thus Plc 4+6
01433 65xxxx BT 4+6
01433 65xxxx SLHS BT, Hathersage (Derbyshire) 4+6
01433 66xxxx Your Communications Ltd 4+6
01433 67xxxx BT 4+6
01433 67xxxx SLED BT, Edale (Derbyshire) 4+6
01433 68xxxx Starcomm Ltd 4+6 F-Digit '0'
01433 69xxxx Magrathea Telecommunications Limited 4+6
01433 70xxxx Mundio Mobile Limited 4+6 F-Digit '6'
01433 71xxxx CFL Communications Limited 4+6 F-Digit '0'
01433 72xxxx Known Communications Limited 4+6 F-Digit '0'
01433 73xxxx INET Telecoms Ltd (Voipfone) 4+6 F-Digit '7'