United Kingdom

Number Code Allocated To Number Length Notes
0131 510xxxx Telephony Services Limited 3+7
0131 511xxxx Colloquium Ltd 3+7
0131 512xxxx TelNG Limited 3+7 F-Digit '2'
0131 513xxxx TelXL Ltd 3+7
0131 514xxxx Lumison Limited 3+7
0131 515xxxx Your Communications Ltd 3+7
0131 516xxxx Magrathea Telecommunications Limited 3+7
0131 517xxxx Resilient Networks Plc 3+7 F-Digit '9'
0131 518xxxx Need More Time Ltd 3+7 F-Digit '0'
0131 519xxxx Cable & Wireless UK 3+7
0131 520xxxx TWL Inbound Ltd 3+7 F-Digit '3'
0131 521xxxx Primus Telecommunications 3+7 F-Digit '1'
0131 522xxxx Zimo Communications Limited 3+7 F-Digit '2'
0131 5230xxx ESWAV BT, Waverley (Lothian) 3+7
0131 5231xxx ESWAV BT, Waverley (Lothian) 3+7
0131 5236xxx ESMAY BT, Edinburgh Maybury (Lothian) 3+7
0131 523xxxx BT 3+7
0131 524xxxx BT 3+7
0131 524xxxx ESWAV BT, Waverley (Lothian) 3+7
0131 525xxxx BT 3+7
0131 525xxxx ESWAV BT, Waverley (Lothian) 3+7
0131 526xxxx Frontier Systems Ltd 3+7 F-Digit '3'
0131 527xxxx Cable & Wireless UK 3+7
0131 528xxxx Cable & Wireless UK 3+7
0131 529xxxx Cable & Wireless UK 3+7
0131 530xxxx Reality Telecom plc 3+7
0131 531xxxx Easynet Group Ltd 3+7 F-Digit '0'
0131 532xxxx Coralbridge Ltd 3+7 F-Digit '0'
0131 533xxxx Fused Networks Limited 3+7
0131 534xxxx Xtec Communications Ltd 3+7 F-Digit '1'
0131 535xxxx Cable & Wireless UK 3+7
0131 536xxxx Cable & Wireless UK 3+7
0131 537xxxx Cable & Wireless UK 3+7
0131 538xxxx Telewest Communications Group Limited 3+7
0131 539xxxx Telewest Communications Group Limited 3+7
0131 540xxxx 24 Seven Communications Ltd 3+7 F-Digit '0'
0131 541xxxx Telappliant Ltd 3+7 F-Digit '2'
0131 542xxxx IPV6 Limited 3+7 F-Digit '0'
0131 543xxxx TeleWare PLC 3+7 F-Digit '3'
0131 544xxxx Mars Communications Limited 3+7 F-Digit '0'
0131 545xxxx Keycom plc 3+7 F-Digit '0'
0131 546xxxx Instant Telecommunications Ltd 3+7 F-Digit '0'
0131 547xxxx Telecoms World Plc 3+7 F-Digit '0'
0131 548xxxx Lixxus Ltd 3+7 F-Digit '0'
0131 549xxxx Cable & Wireless UK 3+7
0131 550xxxx BT 3+7
0131 550xxxx ESWAV BT, Waverley (Lothian) 3+7
0131 551xxxx BT 3+7
0131 551xxxx ESGRA BT, Granton (Lothian) 3+7
0131 552xxxx BT 3+7
0131 553xxxx BT 3+7
0131 553xxxx ESLEI BT, Leith (Lothian) 3+7
0131 554xxxx BT 3+7
0131 555xxxx BT 3+7
0131 555xxxx ESLEI BT, Leith (Lothian) 3+7
0131 556xxxx BT 3+7
0131 556xxxx ESWAV BT, Waverley (Lothian) 3+7
0131 557xxxx BT 3+7
0131 557xxxx ESWAV BT, Waverley (Lothian) 3+7
0131 558xxxx BT 3+7
0131 558xxxx ESWAV BT, Waverley (Lothian) 3+7
0131 5591xxx ESGRA BT, Granton (Lothian) 3+7
0131 5592xxx ESGRA BT, Granton (Lothian) 3+7
0131 5593xxx ESGRA BT, Granton (Lothian) 3+7
0131 5594xxx ESGRA BT, Granton (Lothian) 3+7
0131 5596xxx ESGRA BT, Granton (Lothian) 3+7
0131 5597xxx ESPEN BT, Edinburgh Pentland (Lothian) 3+7
0131 5598xxx ESCRA BT, Craiglockhart (Lothian) 3+7
0131 559xxxx BT 3+7
0131 560xxxx Simwood eSMS Limited 3+7 F-Digit '2'
0131 5610xxx ESLEI BT, Leith (Lothian) 3+7
0131 5612xxx ESLEI BT, Leith (Lothian) 3+7
0131 56134xx ESPOR BT, Portobello (Lothian) 3+7
0131 56135xx ESLEI BT, Leith (Lothian) 3+7
0131 5615xxx ESDAL BT, Dalkeith (Lothian) 3+7
0131 5616xxx ESDAL BT, Dalkeith (Lothian) 3+7
0131 5617xxx ESLEI BT, Leith (Lothian) 3+7
0131 5618xxx ESLEI BT, Leith (Lothian) 3+7
0131 5619xxx ESDAL BT, Dalkeith (Lothian) 3+7
0131 561xxxx BT 3+7
0131 562xxxx Annecto Telecom 3+7 F-Digit '2'
0131 563xxxx BT 3+7 F-Digit '0,1,2,3,4,5,6,7,8,9'
0131 564xxxx INET Telecoms Ltd (Voipfone) 3+7 F-Digit '0'
0131 565xxxx Citrus Telecommunications Ltd 3+7
0131 566xxxx Edge Telecom Ltd 3+7
0131 567xxxx VODARE LTD 3+7
0131 568xxxx Timico Limited 3+7 F-Digit '8'
0131 569xxxx Net-Work Internet Ltd 3+7 F-Digit '0'
0131 570xxxx Globecom International Limited 3+7 F-Digit '0'
0131 571xxxx Nexus Telecommunications plc 3+7 F-Digit '0'
0131 572xxxx Oxygen8 Communications UK Limited 3+7 F-Digit '0'
0131 573xxxx Orbis Telecom 3+7 F-Digit '0'
0131 574xxxx GlobalVocal Limited 3+7 F-Digit '5'
0131 575xxxx Mundio Mobile Limited 3+7 F-Digit '6'
0131 576xxxx OVH Limited 3+7 F-Digit '1'
0131 577xxxx Magnetic North Software Limited 3+7 F-Digit '0'
0131 578xxxx CFL Communications Limited 3+7 F-Digit '0'
0131 579xxxx Hello Telecom (UK) PLC 3+7 F-Digit '0'
0131 580xxxx Known Communications Limited 3+7 F-Digit '0'
0131 581xxxx Magrathea Telecommunications Limited 3+7 F-Digit '8'
0131 582xxxx Vertical Systems Limited 3+7 F-Digit '0'
0131 583xxxx Wight Cable 2005 Ltd 3+7 F-Digit '0'
0131 584xxxx Calltracks Limited 3+7 F-Digit '4'
0131 585xxxx Sound Advertising Ltd 3+7 F-Digit '0'
0131 586xxxx i-Net Communications Group Plc 3+7 F-Digit '0'
0131 588xxxx Jimati UK Ltd 3+7 F-Digit '2'
0131 589xxxx Voicenet Solutions Ltd 3+7 F-Digit '2'