United Kingdom

Number Code Allocated To Number Length Notes
028 3700xxxx TelNG Limited 2+8 F-Digit '2'
028 3701xxxx Frontier Systems Ltd 2+8 F-Digit '3'
028 3702xxxx Telephony Services Limited 2+8 F-Digit '2'
028 3703xxxx O-Bit Telecom Limited 2+8 F-Digit '7'
028 3704xxxx Known Future Limited 2+8 F-Digit '4'
028 3705xxxx Mars Communications Limited 2+8 F-Digit '0'
028 3706xxxx Mundio Mobile Limited 2+8 F-Digit '6'
028 3707xxxx Entanet International Ltd 2+8 F-Digit '1'
028 3708xxxx Timico Limited 2+8 F-Digit '8'
028 3709xxxx Nationwide Telephone Assistance Ltd 2+8 F-Digit '0'
028 3710xxxx VoIP-Un Limited 2+8 F-Digit '0'
028 3711xxxx Orange Home UK Plc 2+8 F-Digit '0'
028 3712xxxx Solutios Limited 2+8 F-Digit '2'
028 3713xxxx Danemere Street Creative 2+8 F-Digit '2'
028 3714xxxx Telecoms World Plc 2+8 F-Digit '0'
028 3715xxxx Syntec UK Ltd 2+8
028 3716xxxx Telappliant Ltd 2+8 F-Digit '2'
028 3717xxxx Localphone Limited 2+8 F-Digit '0'
028 3718xxxx Voxbone SA 2+8 F-Digit '8'
028 3719xxxx Instant Telecommunications Ltd 2+8 F-Digit '0'
028 3721xxxx Nexus Telecommunications plc 2+8 F-Digit '0'
028 3722xxxx Virgin Media Limited 2+8 F-Digit '4,5'
028 3727xxxx Spitfire Network Services Ltd 2+8 F-Digit '7'
028 3730xxxx Telswitch Limited 2+8 F-Digit '0'
028 3731xxxx Easynet Group Ltd 2+8 F-Digit '0'
028 3732xxxx 3C Limited 2+8 F-Digit '2'
028 3733xxxx Net Solutions Europe Limited 2+8
028 3734xxxx Telecom2 Ltd 2+8 F-Digit '6'
028 3735xxxx Inclarity plc 2+8
028 3736xxxx T.T.N.C. Limited 2+8 F-Digit '0,1,2,3,4,5,6,7,8,9'
028 3737xxxx LogicStar Limited 2+8
028 3738xxxx TG Support Limited 2+8
028 3739xxxx FleXtel Limited 2+8
028 3741xxxx Cable & Wireless Plc 2+8
028 3744xxxx Gamma Telecom Holdings Ltd 2+8
028 3747xxxx Eircom UK Ltd 2+8 F-Digit '5'
028 3750xxxx BT 2+8
028 3750xxxx NIGN BT, Glenanne (Northern Ireland) 2+8
028 3751xxxx BT 2+8
028 3751xxxx NIAM BT, Armagh (Northern Ireland) 2+8
028 3752xxxx BT 2+8
028 3752xxxx NIAM BT, Armagh (Northern Ireland) 2+8
028 3753xxxx BT 2+8
028 3753xxxx NIKY BT, Keady (Northern Ireland) 2+8
028 3754xxxx BT 2+8
028 3754xxxx NIBNB BT, Benburb (Northern Ireland) 2+8
028 3755xxxx BT 2+8
028 3755xxxx NIMH BT, Markethill (Northern Ireland) 2+8
028 3756xxxx BT 2+8
028 3756xxxx NICDN BT, Caledon (Northern Ireland) 2+8
028 3757xxxx BT 2+8
028 3758xxxx Starcomm Ltd 2+8 F-Digit '0'
028 3759xxxx CFL Communications Limited 2+8 F-Digit '0'
028 3766xxxx Skycom Ltd 2+8 F-Digit '2'
028 3773xxxx Teledesign plc 2+8 F-Digit '2'
028 3777xxxx Edge Telecom Ltd 2+8
028 3778xxxx Opal Telecom Limited 2+8 F-Digit '8'
028 3783xxxx Net-Work Internet Ltd 2+8 F-Digit '7'
028 3788xxxx Inclarity plc 2+8
028 3799xxxx Magrathea Telecommunications Limited 2+8