United Kingdom

Number Code Allocated To Number Length Notes
01855 20xxxx Orange Home UK Plc 4+6 F-Digit '0'
01855 21xxxx TelNG Limited 4+6 F-Digit '2'
01855 22xxxx Frontier Systems Ltd 4+6 F-Digit '3'
01855 23xxxx Coralbridge Ltd 4+6 F-Digit '0'
01855 24xxxx Teledesign plc 4+6 F-Digit '2'
01855 25xxxx Localphone Limited 4+6 F-Digit '0'
01855 26xxxx VoIP-Un Limited 4+6 F-Digit '0'
01855 27xxxx Telephony Services Limited 4+6 F-Digit '2'
01855 28xxxx Opal Telecom Limited 4+6 F-Digit '8'
01855 29xxxx O-Bit Telecom Limited 4+6 F-Digit '7'
01855 30xxxx InTechnology Plc 4+6 F-Digit '2'
01855 31xxxx Telecom2 Ltd 4+6 F-Digit '6'
01855 32xxxx Timico Limited 4+6 F-Digit '8'
01855 33xxxx Net-Work Internet Ltd 4+6 F-Digit '3'
01855 34xxxx Telswitch Limited 4+6 F-Digit '0'
01855 35xxxx Voxbone SA 4+6 F-Digit '8'
01855 36xxxx Starcomm Ltd 4+6 F-Digit '0'
01855 37xxxx Known Future Limited 4+6 F-Digit '5'
01855 38xxxx 3C Limited 4+6 F-Digit '2'
01855 39xxxx Solutios Limited 4+6 F-Digit '2'
01855 40xxxx BT 4+6
01855 40xxxx NSKLV BT, Kinlochleven (Highland) 4+6
01855 41xxxx Magrathea Telecommunications Limited 4+6
01855 42xxxx LogicStar Limited 4+6
01855 43xxxx Gamma Telecom Holdings Ltd 4+6
01855 44xxxx Edge Telecom Ltd 4+6
01855 45xxxx C3 Europe Limited 4+6 F-Digit '6'
01855 46xxxx Net Solutions Europe Limited 4+6 F-Digit '6'
01855 47xxxx Inclarity plc 4+6 F-Digit '2'
01855 48xxxx FleXtel Limited 4+6
01855 49xxxx Virgin Media Limited 4+6 F-Digit '4,5'
01855 50xxxx Mars Communications Limited 4+6 F-Digit '0'
01855 51xxxx Instant Telecommunications Ltd 4+6 F-Digit '0'
01855 52xxxx IPV6 Limited 4+6 F-Digit '0'
01855 53xxxx Telecoms World Plc 4+6 F-Digit '0'
01855 54xxxx Mundio Mobile Limited 4+6 F-Digit '0'
01855 55xxxx CFL Communications Limited 4+6 F-Digit '0'
01855 56xxxx Known Communications Limited 4+6 F-Digit '0'
01855 57xxxx Nexus Telecommunications plc 4+6 F-Digit '0'
01855 58xxxx Danemere Street Creative 4+6 F-Digit '2'
01855 80xxxx Syntec UK Ltd 4+6
01855 81xxxx BT 4+6
01855 81xxxx NSBCS BT, Ballachulish (Highland) 4+6
01855 82xxxx BT 4+6
01855 83xxxx BT 4+6
01855 83xxxx NSKLV BT, Kinlochleven (Highland) 4+6
01855 84xxxx BT 4+6
01855 84xxxx NSAGR BT, Ardgour (Highland) 4+6
01855 85xxxx BT 4+6
01855 85xxxx NSKHS BT, Kingshouse (Highland) 4+6
01855 86xxxx T.T.N.C. Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9'
01855 87xxxx Spitfire Network Services Ltd 4+6 F-Digit '7'
01855 88xxxx Skycom Ltd 4+6 F-Digit '2'
01855 89xxxx Nationwide Telephone Assistance Ltd 4+6 F-Digit '0'