| 01482 01 | Magrathea Telecommunications Limited | 01/06/2017 |
| 01482 11 | KCOM Group Limited | 07/06/2005 |
| 01482 200 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 201 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 202 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 203 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 204 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 205 | BT | 23/09/2020 |
| 01482 206 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 207 | KCOM Group Limited | 09/07/2020 |
| 01482 208 | KCOM Group Limited | 09/07/2020 |
| 01482 209 | TGL Services (UK) Ltd | 02/02/2015 |
| 01482 21 | KCOM Group Limited | 15/07/1994 |
| 01482 22 | KCOM Group Limited | 15/07/1994 |
| 01482 23 | BT | 23/12/2004 |
| 01482 240 | AQL Wholesale Ltd | 30/03/2010 |
| 01482 241 | AQL Wholesale Ltd | 30/03/2010 |
| 01482 242 | AQL Wholesale Ltd | 30/03/2010 |
| 01482 244 | AQL Wholesale Ltd | 30/03/2010 |
| 01482 245 | Suretec Systems Ltd | 06/05/2010 |
| 01482 246 | KCOM Group Limited | 22/12/2014 |
| 01482 247 | AQL Wholesale Ltd | 30/03/2010 |
| 01482 248 | KCOM Group Limited | 31/08/2010 |
| 01482 250 | IP Wholesale Limited | 01/06/2017 |
| 01482 252 | I-NET COMMUNICATIONS GROUP PLC | 14/02/2011 |
| 01482 253 | Minotaur Telecom Limited | 01/02/2013 |
| 01482 255 | TESLA LOGIC LTD | 21/04/2021 |
| 01482 256 | Orbtalk Limited | 05/07/2011 |
| 01482 257 | Numbers Plus Ltd | 28/07/2011 |
| 01482 258 | TalkTalk Communications Limited | 13/02/2013 |
| 01482 270 | GCI Network Solutions Ltd | 25/04/2017 |
| 01482 271 | GCI Network Solutions Ltd | 25/04/2017 |
| 01482 272 | Affiniti Integrated Solutions Limited | 26/11/2012 |
| 01482 273 | Vonage Limited | 26/01/2015 |
| 01482 274 | Colt Technology Services | 17/04/2015 |
| 01482 275 | Colt Technology Services | 09/02/2016 |
| 01482 28 | Lumen Technologies UK Limited | 29/08/2001 |
| 01482 290 | Linear Telecoms Limited | 12/10/2010 |
| 01482 291 | Hello Telecom (UK) Limited | 10/11/2011 |
| 01482 292 | Internexus Networks Limited | 21/11/2011 |
| 01482 293 | Nexbridge Communications Limited | 10/01/2012 |
| 01482 296 | Gamma Telecom Holdings Ltd | 14/09/2016 |
| 01482 297 | Calltracks Limited | 20/04/2017 |
| 01482 298 | Simwood eSMS Limited | 14/02/2012 |
| 01482 299 | Citrus Telecommunications Ltd | 28/02/2012 |
| 01482 30 | KCOM Group Limited | 15/07/1994 |
| 01482 31 | KCOM Group Limited | 10/03/2003 |
| 01482 32 | KCOM Group Limited | 19/04/1995 |
| 01482 33 | KCOM Group Limited | 19/04/1995 |
| 01482 34 | KCOM Group Limited | 19/04/1995 |
| 01482 35 | KCOM Group Limited | 15/07/1994 |
| 01482 363 | Digital Space Group Limited | 12/04/2016 |
| 01482 37 | KCOM Group Limited | 19/04/1995 |
| 01482 38 | KCOM Group Limited | 03/05/2000 |
| 01482 39 | KCOM Group Limited | 18/07/2000 |
| 01482 40 | Vodafone Ltd (C&W) | 05/09/2013 |
| 01482 410 | Redcentric Solutions Limited | 05/06/2015 |
| 01482 412 | Redcentric Solutions Limited | 05/06/2015 |
| 01482 414 | Redcentric Solutions Limited | 05/06/2015 |
| 01482 415 | Redcentric Solutions Limited | 05/06/2015 |
| 01482 419 | Redcentric Solutions Limited | 05/06/2015 |
| 01482 42 | Gamma Telecom Holdings Ltd | 24/12/2004 |
| 01482 43 | Verizon UK Limited | 03/08/2005 |
| 01482 44 | KCOM Group Limited | 15/07/1994 |
| 01482 450 | BT | 08/06/2017 |
| 01482 451 | Gamma Telecom Holdings Ltd | 10/10/2017 |
| 01482 452 | Media Hawk Ltd | 23/10/2017 |
| 01482 453 | Gamma Telecom Holdings Ltd | 07/02/2018 |
| 01482 454 | Affiniti Integrated Solutions Limited | 20/11/2017 |
| 01482 455 | DIDWW Ireland Limited | 19/10/2017 |
| 01482 456 | KCOM Group Limited | 21/11/2017 |
| 01482 457 | Telappliant Ltd | 05/04/2018 |
| 01482 458 | BT | 23/07/2018 |
| 01482 459 | Gamma Telecom Holdings Ltd | 02/10/2018 |
| 01482 46 | KCOM Group Limited | 01/07/1997 |
| 01482 47 | KCOM Group Limited | 15/07/1994 |
| 01482 48 | KCOM Group Limited | 16/03/2005 |
| 01482 49 | KCOM Group Limited | 15/07/1994 |
| 01482 50 | KCOM Group Limited | 15/07/1994 |
| 01482 520 | FleXtel Limited | 27/06/2017 |
| 01482 521 | FleXtel Limited | 27/06/2017 |
| 01482 522 | Gamma Telecom Holdings Ltd | 22/09/2021 |
| 01482 523 | FleXtel Limited | 27/06/2017 |
| 01482 524 | Colt Technology Services | 22/02/2021 |
| 01482 525 | Hello Telecom (UK) Limited | 11/12/2020 |
| 01482 526 | BT | 27/04/2021 |
| 01482 528 | FleXtel Limited | 27/06/2017 |
| 01482 529 | Gamma Telecom Holdings Ltd | 15/03/2021 |
| 01482 530 | Invoco Ltd | 26/09/2011 |
| 01482 531 | Media Hawk Ltd | 26/09/2011 |
| 01482 532 | API Telecom Limited | 30/03/2012 |
| 01482 533 | ICC Networks Ltd | 16/04/2012 |
| 01482 534 | Magrathea Telecommunications Limited | 12/06/2012 |
| 01482 535 | IOVOX Limited | 03/07/2012 |
| 01482 536 | Orange Business Holdings UK Limited | 19/07/2012 |
| 01482 538 | Content Guru Limited | 15/10/2012 |
| 01482 549 | TelXL Ltd | 15/04/2010 |
| 01482 56 | KCOM Group Limited | 15/07/1994 |
| 01482 57 | KCOM Group Limited | 15/07/1994 |
| 01482 58 | KCOM Group Limited | 15/07/1994 |
| 01482 59 | KCOM Group Limited | 15/07/1994 |
| 01482 60 | KCOM Group Limited | 15/07/1994 |
| 01482 61 | KCOM Group Limited | 26/02/1998 |
| 01482 62 | KCOM Group Limited | 15/07/1994 |
| 01482 63 | KCOM Group Limited | 15/07/1994 |
| 01482 64 | KCOM Group Limited | 15/07/1994 |
| 01482 65 | KCOM Group Limited | 15/07/1994 |
| 01482 66 | KCOM Group Limited | 15/07/1994 |
| 01482 67 | KCOM Group Limited | 15/07/1994 |
| 01482 680 | Club Communications Ltd | 21/09/2018 |
| 01482 681 | Sky UK Limited | 20/11/2018 |
| 01482 682 | KCOM Group Limited | 15/05/2018 |
| 01482 683 | KCOM Group Limited | 15/05/2018 |
| 01482 684 | KCOM Group Limited | 12/04/2019 |
| 01482 686 | Colt Technology Services | 13/08/2018 |
| 01482 687 | Colt Technology Services | 29/11/2019 |
| 01482 688 | BT | 29/01/2019 |
| 01482 689 | BT | 07/01/2020 |
| 01482 690 | Voiceflex Limited | 17/12/2019 |
| 01482 691 | 24 SEVEN CLOUD COMMUNICATIONS LTD | 17/01/2020 |
| 01482 692 | BT | 27/06/2019 |
| 01482 693 | Magrathea Telecommunications Limited | 09/09/2019 |
| 01482 694 | Mi Telecom Limited | 06/07/2020 |
| 01482 695 | Belgacom International Carrier Services SA | 06/02/2020 |
| 01482 696 | KCOM Group Limited | 16/06/2017 |
| 01482 697 | Gamma Telecom Holdings Ltd | 11/12/2019 |
| 01482 698 | KCOM Group Limited | 07/01/2020 |
| 01482 699 | Gamma Telecom Holdings Ltd | 03/05/2019 |
| 01482 70 | KCOM Group Limited | 15/07/1994 |
| 01482 71 | KCOM Group Limited | 15/07/1994 |
| 01482 725 | GTT-EMEA LTD | 13/10/2021 |
| 01482 726 | GTT-EMEA LTD | 13/10/2021 |
| 01482 729 | GTT-EMEA LTD | 13/10/2021 |
| 01482 730 | Inclarity Communications Limited | 06/12/2010 |
| 01482 731 | Inclarity Communications Limited | 06/12/2010 |
| 01482 733 | SiPalto Ltd | 17/02/2020 |
| 01482 734 | Media Hawk Ltd | 01/07/2020 |
| 01482 735 | Inclarity Communications Limited | 06/12/2010 |
| 01482 736 | Gamma Telecom Holdings Ltd | 25/11/2020 |
| 01482 737 | ICUK Computing Services Limited | 05/06/2020 |
| 01482 738 | BT | 09/03/2020 |
| 01482 739 | Gamma Telecom Holdings Ltd | 23/04/2020 |
| 01482 744 | Digital Mail Limited | 10/03/2010 |
| 01482 750 | Redwood Technologies Ltd | 15/11/2018 |
| 01482 751 | TelNG Limited | 27/02/2007 |
| 01482 753 | Localphone Limited | 04/05/2007 |
| 01482 755 | Voiceflex Limited | 30/07/2007 |
| 01482 756 | BT | 17/08/2007 |
| 01482 757 | Spitfire Network Services Limited | 22/08/2006 |
| 01482 759 | Resilient PLC | 09/01/2007 |
| 01482 760 | Syntec Limited | 18/04/2013 |
| 01482 761 | Virgin Media Limited | 04/11/2016 |
| 01482 762 | Kalnet4U Ltd | 22/05/2013 |
| 01482 763 | IOVOX Limited | 23/10/2014 |
| 01482 764 | Affiniti Integrated Solutions Limited | 10/06/2016 |
| 01482 765 | YayYay Limited | 24/04/2015 |
| 01482 766 | iHub 2 Limited | 18/05/2016 |
| 01482 767 | Affiniti Integrated Solutions Limited | 07/05/2014 |
| 01482 768 | KCOM Group Limited | 03/02/2017 |
| 01482 769 | Number Services Ltd. | 22/11/2018 |
| 01482 770 | Magrathea Telecommunications Limited | 28/01/2010 |
| 01482 772 | Magrathea Telecommunications Limited | 28/01/2010 |
| 01482 778 | Magrathea Telecommunications Limited | 28/01/2010 |
| 01482 78 | KCOM Group Limited | 15/07/1994 |
| 01482 79 | KCOM Group Limited | 15/07/1994 |
| 01482 80 | KCOM Group Limited | 15/07/1994 |
| 01482 81 | KCOM Group Limited | 15/07/1994 |
| 01482 82 | KCOM Group Limited | 15/07/1994 |
| 01482 83 | KCOM Group Limited | 15/07/1994 |
| 01482 84 | KCOM Group Limited | 15/07/1994 |
| 01482 85 | KCOM Group Limited | 15/07/1994 |
| 01482 86 | KCOM Group Limited | 15/07/1994 |
| 01482 87 | KCOM Group Limited | 15/07/1994 |
| 01482 88 | KCOM Group Limited | 15/07/1994 |
| 01482 89 | KCOM Group Limited | 15/07/1994 |
| 01482 900 | (AQ) LIMITED | 11/09/2012 |
| 01482 901 | VoIP-Un Limited | 30/10/2007 |
| 01482 902 | Barritel Limited | 17/08/2007 |
| 01482 903 | Entanet International Ltd | 20/12/2007 |
| 01482 904 | Voxbone SA | 25/10/2007 |
| 01482 905 | Invade International Ltd | 12/01/2016 |
| 01482 906 | Net-Work Internet Ltd | 24/09/2007 |
| 01482 907 | Digital Space Group Limited | 15/03/2016 |
| 01482 908 | TalkTalk Communications Limited | 28/08/2007 |
| 01482 910 | TTNC Limited | 15/11/2013 |
| 01482 911 | TTNC Limited | 15/11/2013 |
| 01482 919 | TTNC Limited | 15/11/2013 |
| 01482 922 | Vodafone Ltd (C&W) | 18/06/2013 |
| 01482 930 | ETC Telecom Limited | 06/02/2008 |
| 01482 931 | Telecom2 Limited | 11/09/2009 |
| 01482 932 | I.T Communications Limited | 19/04/2016 |
| 01482 934 | Nodemax Limited | 21/05/2008 |
| 01482 935 | Inet Telecoms Ltd (Voipfone) | 08/08/2008 |
| 01482 940 | Internetty Ltd | 01/06/2020 |
| 01482 941 | 24 SEVEN CLOUD COMMUNICATIONS LTD | 30/09/2019 |
| 01482 943 | TalkTalk Communications Limited | 15/01/2009 |
| 01482 946 | TeleWare Group PLC | 21/02/2013 |
| 01482 947 | Gamma Telecom Holdings Ltd | 01/06/2017 |
| 01482 948 | Dynamic Mobile Billing Limited | 08/04/2009 |
| 01482 949 | Andrews & Arnold (Numbers) Ltd | 11/03/2009 |
| 01482 950 | Telecoms World PLC | 14/04/2009 |
| 01482 954 | Vectone Mobile Limited | 30/06/2009 |
| 01482 957 | Ziron Limited | 20/06/2012 |
| 01482 958 | Alnitak GmbH | 10/06/2016 |
| 01482 961 | Liquid 11 Limited | 20/04/2010 |
| 01482 962 | Calltracks Limited | 20/09/2013 |
| 01482 963 | Core Telecom Limited | 05/08/2010 |
| 01482 965 | Plus Telecom Limited | 24/09/2010 |
| 01482 966 | Windsor Telecom Ltd | 21/07/2010 |
| 01482 967 | Intrado Cloud Solutions Limited | 02/08/2010 |
| 01482 968 | VoiceHost Limited | 27/09/2010 |
| 01482 969 | Numbergroup Utilities Ltd | 02/11/2010 |
| 01482 971 | KCOM Group Limited | 18/10/2010 |
| 01482 972 | KCOM Group Limited | 18/10/2010 |
| 01482 973 | KCOM Group Limited | 18/10/2010 |
| 01482 974 | KCOM Group Limited | 29/10/2010 |
| 01482 975 | KCOM Group Limited | 29/10/2010 |
| 01482 976 | KCOM Group Limited | 29/10/2010 |
| 01482 977 | Affiniti Integrated Solutions Limited | 02/12/2010 |
| 01482 979 | Invosys Limited | 10/07/2012 |
| 01482 987 | Served Up Limited | 29/06/2010 |
| 01482 988 | Served Up Limited | 29/06/2010 |
| 01482 989 | Served Up Limited | 29/06/2010 |