United Kingdom

Number Code Allocated To Number Length Notes
01857 20xxxx Inclarity plc 4+6 F-Digit '2'
01857 21xxxx Virgin Media Limited 4+6 F-Digit '4,5'
01857 22xxxx Orange Home UK Plc 4+6 F-Digit '0'
01857 23xxxx TelNG Limited 4+6 F-Digit '2'
01857 24xxxx Localphone Limited 4+6 F-Digit '0'
01857 25xxxx Frontier Systems Ltd 4+6 F-Digit '3'
01857 26xxxx Opal Telecom Limited 4+6 F-Digit '8'
01857 27xxxx C3 Europe Limited 4+6 F-Digit '6'
01857 28xxxx Spitfire Network Services Ltd 4+6 F-Digit '7'
01857 29xxxx Skycom Ltd 4+6 F-Digit '2'
01857 30xxxx Coralbridge Ltd 4+6 F-Digit '0'
01857 31xxxx VoIP-Un Limited 4+6 F-Digit '0'
01857 32xxxx Teledesign plc 4+6 F-Digit '2'
01857 33xxxx T.T.N.C. Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9'
01857 34xxxx Gamma Telecom Holdings Ltd 4+6
01857 35xxxx LogicStar Limited 4+6
01857 36xxxx Telephony Services Limited 4+6 F-Digit '2'
01857 37xxxx Syntec UK Ltd 4+6
01857 38xxxx FleXtel Limited 4+6
01857 39xxxx Net Solutions Europe Limited 4+6 F-Digit '9'
01857 40xxxx Net-Work Internet Ltd 4+6 F-Digit '0'
01857 41xxxx O-Bit Telecom Limited 4+6 F-Digit '7'
01857 42xxxx InTechnology Plc 4+6 F-Digit '2'
01857 43xxxx Telecom2 Ltd 4+6 F-Digit '6'
01857 44xxxx Timico Limited 4+6 F-Digit '8'
01857 45xxxx Telswitch Limited 4+6 F-Digit '0'
01857 46xxxx Voxbone SA 4+6 F-Digit '8'
01857 47xxxx Starcomm Ltd 4+6 F-Digit '0'
01857 48xxxx Known Future Limited 4+6 F-Digit '6'
01857 49xxxx 3C Limited 4+6 F-Digit '2'
01857 50xxxx IPV6 Limited 4+6 F-Digit '0'
01857 51xxxx Mars Communications Limited 4+6 F-Digit '0'
01857 52xxxx Solutios Limited 4+6 F-Digit '2'
01857 53xxxx Instant Telecommunications Ltd 4+6 F-Digit '0'
01857 54xxxx Telecoms World Plc 4+6 F-Digit '0'
01857 55xxxx Mundio Mobile Limited 4+6 F-Digit '6'
01857 56xxxx Nexus Telecommunications plc 4+6 F-Digit '0'
01857 57xxxx CFL Communications Limited 4+6 F-Digit '0'
01857 58xxxx Known Communications Limited 4+6 F-Digit '0'
01857 60xxxx BT 4+6
01857 60xxxx NSSDY BT, Sanday (Orkney) 4+6
01857 61xxxx BT 4+6
01857 61xxxx NSSSY BT, Stronsay (Orkney) 4+6
01857 62xxxx BT 4+6
01857 62xxxx NSEDY BT, Eday (Orkney) 4+6
01857 63xxxx BT 4+6
01857 63xxxx NSNRS BT, North Ronaldsay (Orkney) 4+6
01857 64xxxx BT 4+6
01857 64xxxx NSPPW BT, Papa Westray (Orkney) 4+6
01857 65xxxx Edge Telecom Ltd 4+6
01857 66xxxx Magrathea Telecommunications Limited 4+6
01857 67xxxx BT 4+6
01857 67xxxx NSWRY BT, Westray (Orkney Islands) 4+6
01857 68xxxx Nationwide Telephone Assistance Ltd 4+6 F-Digit '0'
01857 69xxxx Danemere Street Creative 4+6