01204 14 | Virgin Media Limited | 10/05/2013 |
01204 200 | Localphone Limited | 24/04/2007 |
01204 201 | Voiceflex Limited | 26/07/2007 |
01204 202 | (AQ) LIMITED | 10/09/2012 |
01204 203 | Orange Business Holdings UK Limited | 26/02/2013 |
01204 204 | Net-Work Internet Ltd | 21/09/2007 |
01204 205 | Nationwide Telephone Assistance Ltd | 01/10/2007 |
01204 206 | VoIP-Un Limited | 25/10/2007 |
01204 207 | Digital Space Group Limited | 29/11/2007 |
01204 208 | Voxbone SA | 23/11/2007 |
01204 209 | Telecom2 Limited | 01/09/2009 |
01204 211 | TelXL Ltd | 12/02/2008 |
01204 212 | Nodemax Limited | 08/07/2008 |
01204 214 | TalkTalk Communications Limited | 12/02/2013 |
01204 215 | Solutios Limited | 19/08/2008 |
01204 216 | Inet Telecoms Ltd (Voipfone) | 18/09/2008 |
01204 219 | Barritel Limited | 08/10/2008 |
01204 221 | Digital Space Group Limited | 15/03/2016 |
01204 222 | Barritel Limited | 26/11/2013 |
01204 223 | IPV6 Limited | 22/01/2009 |
01204 224 | Telappliant Ltd | 03/02/2009 |
01204 225 | Mars Communications Limited | 03/02/2009 |
01204 226 | Andrews & Arnold (Numbers) Ltd | 24/02/2009 |
01204 227 | TalkTalk Communications Limited | 03/03/2009 |
01204 228 | Telecoms World PLC | 05/03/2009 |
01204 229 | Nexus Telecommunications Limited | 07/04/2009 |
01204 230 | Digitech Solutions Global Limited | 22/06/2012 |
01204 231 | Sky UK Limited | 20/06/2013 |
01204 232 | VoiceHost Limited | 22/06/2010 |
01204 233 | GTT-EMEA LTD | 13/10/2021 |
01204 235 | TTNC Limited | 15/11/2013 |
01204 236 | Digital Space Group Limited | 12/04/2016 |
01204 237 | Vodafone Ltd (C&W) | 18/06/2013 |
01204 238 | AQL Wholesale Ltd | 21/06/2006 |
01204 239 | FleXtel Limited | 16/11/2005 |
01204 240 | Sky UK Limited | 20/06/2013 |
01204 241 | TelNG Limited | 26/02/2007 |
01204 242 | Commi Holdings Limited | 21/11/2016 |
01204 243 | Sky UK Limited | 20/06/2013 |
01204 244 | Virgin Media Limited | 30/08/2006 |
01204 245 | Virgin Media Limited | 30/08/2006 |
01204 246 | Digital Mail Limited | 02/02/2007 |
01204 247 | Spitfire Network Services Limited | 27/06/2006 |
01204 249 | Resilient PLC | 05/12/2006 |
01204 250 | Dynamic Mobile Billing Limited | 09/04/2009 |
01204 251 | Invade International Ltd | 12/01/2016 |
01204 252 | New Call Telecom Ltd | 18/02/2015 |
01204 253 | Vectone Mobile Limited | 29/06/2009 |
01204 255 | TeleWare Group PLC | 14/08/2009 |
01204 257 | Vonage Limited | 26/01/2015 |
01204 258 | Swiftnet Ltd | 03/02/2010 |
01204 259 | CFL Communications Ltd | 07/07/2009 |
01204 261 | WIGHTFIBRE LIMITED | 16/12/2009 |
01204 262 | I-NET COMMUNICATIONS GROUP PLC | 12/01/2010 |
01204 263 | Buzz Networks Limited | 24/02/2010 |
01204 264 | E164 Ltd | 11/03/2010 |
01204 265 | Numbergroup Utilities Ltd | 02/11/2010 |
01204 266 | Atomstream Limited | 25/02/2010 |
01204 267 | Liquid 11 Limited | 20/04/2010 |
01204 268 | Digitech Solutions Global Limited | 21/04/2010 |
01204 269 | Suretec Systems Ltd | 29/04/2010 |
01204 270 | Sky UK Limited | 20/06/2013 |
01204 271 | Calltracks Limited | 19/09/2013 |
01204 272 | TeleSurf Limited | 30/06/2010 |
01204 274 | Windsor Telecom Ltd | 19/07/2010 |
01204 275 | Simwood eSMS Limited | 20/07/2010 |
01204 276 | Core Telecom Limited | 06/08/2010 |
01204 277 | Telephone Box Limited | 09/11/2010 |
01204 278 | Lumen Technologies UK Limited | 16/09/2010 |
01204 279 | Sky UK Limited | 20/06/2013 |
01204 280 | Phone Co-Op Numbering Limited | 16/12/2010 |
01204 282 | Invosys Limited | 09/07/2012 |
01204 283 | Sky UK Limited | 20/06/2013 |
01204 284 | IP Wholesale Limited | 01/06/2017 |
01204 285 | Hello Telecom (UK) Limited | 15/02/2011 |
01204 286 | 24 SEVEN CLOUD COMMUNICATIONS LTD | 30/09/2019 |
01204 287 | Minotaur Telecom Limited | 31/01/2013 |
01204 288 | Relax Telecom Limited | 15/08/2014 |
01204 290 | iHub 2 Limited | 18/05/2016 |
01204 291 | TalkTalk Communications Limited | 15/10/2013 |
01204 292 | Kalnet4U Ltd | 08/05/2013 |
01204 293 | XoverX Ltd | 01/05/2013 |
01204 294 | Sky UK Limited | 13/01/2014 |
01204 295 | Sky UK Limited | 13/01/2014 |
01204 296 | Sky UK Limited | 13/01/2014 |
01204 298 | Sky UK Limited | 20/06/2013 |
01204 299 | Redwood Technologies Ltd | 15/11/2018 |
01204 30 | BT | 15/07/1994 |
01204 310 | Sky UK Limited | 20/06/2013 |
01204 311 | Nexbridge Communications Limited | 09/01/2012 |
01204 312 | API Telecom Limited | 26/03/2012 |
01204 313 | Tuxtel Ltd | 21/12/2011 |
01204 315 | Sky UK Limited | 20/06/2013 |
01204 316 | Bicom Systems EURL | 02/03/2012 |
01204 317 | IOVOX Limited | 03/04/2012 |
01204 318 | ICC Networks Ltd | 16/07/2012 |
01204 319 | Ziron Limited | 27/07/2012 |
01204 322 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 323 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 324 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 325 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 326 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 327 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 328 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 329 | Gamma Telecom Holdings Ltd | 15/11/2012 |
01204 33 | Virgin Media Limited | 28/04/2015 |
01204 34 | Redcentric Solutions Limited | 05/06/2015 |
01204 350 | TalkTalk Communications Limited | 04/07/2014 |
01204 351 | IOVOX Limited | 23/10/2014 |
01204 352 | Lanonyx Telecom Limited | 27/02/2015 |
01204 353 | TalkTalk Communications Limited | 10/02/2015 |
01204 354 | Affiniti Integrated Solutions Limited | 26/02/2015 |
01204 355 | Affiniti Integrated Solutions Limited | 09/02/2015 |
01204 356 | Colt Technology Services | 17/04/2015 |
01204 357 | Gamma Telecom Holdings Ltd | 30/07/2014 |
01204 358 | YayYay Limited | 23/04/2015 |
01204 36 | BT | 15/07/1994 |
01204 370 | BT | 07/06/2012 |
01204 371 | BT | 07/06/2012 |
01204 372 | BT | 07/06/2012 |
01204 373 | BT | 07/06/2012 |
01204 374 | BT | 07/06/2012 |
01204 375 | BT | 07/06/2012 |
01204 377 | BT | 07/06/2012 |
01204 378 | BT | 07/06/2012 |
01204 38 | BT | 15/07/1994 |
01204 39 | BT | 15/07/1994 |
01204 40 | Virgin Media Limited | 13/03/1995 |
01204 41 | Virgin Media Limited | 15/07/1994 |
01204 420 | Virgin Media Limited | 27/06/2012 |
01204 422 | Virgin Media Limited | 27/06/2012 |
01204 424 | Virgin Media Limited | 27/06/2012 |
01204 425 | Virgin Media Limited | 27/06/2012 |
01204 426 | Virgin Media Limited | 27/06/2012 |
01204 427 | Virgin Media Limited | 27/06/2012 |
01204 428 | Virgin Media Limited | 27/06/2012 |
01204 429 | Virgin Media Limited | 27/06/2012 |
01204 43 | Virgin Media Limited | 08/03/1996 |
01204 44 | Vodafone Ltd (Energis) | 26/05/2006 |
01204 45 | Virgin Media Limited | 08/03/1996 |
01204 46 | BT | 15/07/1994 |
01204 47 | BT | 15/07/1994 |
01204 48 | Virgin Media Limited | 08/04/1997 |
01204 491 | BT | 07/06/2012 |
01204 492 | BT | 07/06/2012 |
01204 493 | BT | 07/06/2012 |
01204 494 | BT | 07/06/2012 |
01204 495 | BT | 07/06/2012 |
01204 496 | BT | 07/06/2012 |
01204 497 | BT | 07/06/2012 |
01204 498 | BT | 07/06/2012 |
01204 50 | Verizon UK Limited | 12/07/1999 |
01204 51 | BT | 15/07/1994 |
01204 52 | BT | 15/07/1994 |
01204 531 | BT | 07/06/2012 |
01204 532 | BT | 07/06/2012 |
01204 533 | BT | 07/06/2012 |
01204 534 | BT | 07/06/2012 |
01204 535 | BT | 07/06/2012 |
01204 536 | BT | 07/06/2012 |
01204 537 | BT | 07/06/2012 |
01204 540 | BT | 07/06/2012 |
01204 541 | BT | 07/06/2012 |
01204 542 | BT | 07/06/2012 |
01204 543 | BT | 07/06/2012 |
01204 544 | BT | 07/06/2012 |
01204 545 | BT | 07/06/2012 |
01204 546 | BT | 07/06/2012 |
01204 547 | BT | 07/06/2012 |
01204 548 | BT | 07/06/2012 |
01204 55 | BT | 24/01/1995 |
01204 560 | Internet of Things Limited | 13/08/2018 |
01204 561 | Sky UK Limited | 19/10/2015 |
01204 562 | Sky UK Limited | 19/10/2015 |
01204 563 | Gamma Telecom Holdings Ltd | 25/11/2015 |
01204 564 | I.T Communications Limited | 20/11/2015 |
01204 565 | AQL Wholesale Ltd | 11/06/2015 |
01204 566 | M247 Ltd | 25/09/2015 |
01204 567 | Gamma Telecom Holdings Ltd | 17/06/2015 |
01204 568 | Media Hawk Ltd | 02/12/2015 |
01204 569 | Alnitak GmbH | 07/12/2015 |
01204 57 | BT | 15/07/1994 |
01204 580 | Club Communications Ltd | 24/03/2016 |
01204 581 | Calltracks Limited | 15/04/2016 |
01204 582 | NFON UK Ltd | 29/04/2016 |
01204 583 | Belgacom International Carrier Services SA | 20/06/2016 |
01204 584 | Gamma Telecom Holdings Ltd | 10/06/2016 |
01204 586 | Media Hawk Ltd | 28/09/2016 |
01204 587 | Sky UK Limited | 03/10/2016 |
01204 588 | Colt Technology Services | 07/04/2016 |
01204 589 | Gamma Telecom Holdings Ltd | 11/11/2016 |
01204 59 | BT | 15/07/1994 |
01204 60 | BT | 14/03/1995 |
01204 61 | BT | 15/07/1994 |
01204 62 | BT | 15/07/1994 |
01204 63 | BT | 15/07/1994 |
01204 64 | BT | 15/07/1994 |
01204 65 | BT | 15/07/1994 |
01204 66 | BT | 15/07/1994 |
01204 67 | BT | 15/07/1994 |
01204 68 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 69 | BT | 15/07/1994 |
01204 70 | BT | 15/07/1994 |
01204 710 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 711 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 712 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 713 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 714 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 715 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 716 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 73 | Syntec Limited | 22/03/2005 |
01204 743 | Vodafone Ltd (C&W) | 01/04/2019 |
01204 748 | Vodafone Ltd (C&W) | 01/04/2019 |
01204 749 | Vodafone Ltd (C&W) | 01/04/2019 |
01204 75 | TGL Services (UK) Ltd | 02/02/2015 |
01204 770 | TalkTalk Communications Limited | 31/08/2011 |
01204 771 | TalkTalk Communications Limited | 31/08/2011 |
01204 772 | TalkTalk Communications Limited | 31/08/2011 |
01204 773 | TalkTalk Communications Limited | 31/08/2011 |
01204 774 | TalkTalk Communications Limited | 31/08/2011 |
01204 775 | TalkTalk Communications Limited | 31/08/2011 |
01204 776 | TalkTalk Communications Limited | 31/08/2011 |
01204 777 | TalkTalk Communications Limited | 31/08/2011 |
01204 778 | TalkTalk Communications Limited | 31/08/2011 |
01204 781 | Sky UK Limited | 20/06/2013 |
01204 782 | TalkTalk Communications Limited | 24/01/2013 |
01204 783 | Sky UK Limited | 20/06/2013 |
01204 784 | Numbers Plus Ltd | 13/02/2013 |
01204 786 | Media Hawk Ltd | 10/04/2013 |
01204 787 | Content Guru Limited | 12/10/2012 |
01204 788 | Intrado Cloud Solutions Limited | 15/01/2013 |
01204 789 | Sky UK Limited | 20/06/2013 |
01204 791 | BT | 07/06/2012 |
01204 792 | BT | 07/06/2012 |
01204 793 | BT | 07/06/2012 |
01204 794 | BT | 07/06/2012 |
01204 795 | BT | 07/06/2012 |
01204 796 | BT | 07/06/2012 |
01204 797 | BT | 07/06/2012 |
01204 798 | BT | 07/06/2012 |
01204 799 | BT | 07/06/2012 |
01204 800 | Gamma Telecom Holdings Ltd | 20/11/2017 |
01204 801 | Entanet International Ltd | 05/12/2017 |
01204 802 | Voxbone SA | 23/02/2018 |
01204 803 | Gamma Telecom Holdings Ltd | 08/03/2018 |
01204 804 | Zapappi Ltd | 05/01/2018 |
01204 805 | Digital Select Limited | 23/02/2018 |
01204 806 | Voxbone SA | 17/04/2018 |
01204 808 | Colt Technology Services | 23/02/2018 |
01204 809 | Sky UK Limited | 04/06/2018 |
01204 811 | BT | 07/06/2012 |
01204 812 | BT | 07/06/2012 |
01204 813 | BT | 07/06/2012 |
01204 814 | BT | 07/06/2012 |
01204 815 | BT | 07/06/2012 |
01204 819 | BT | 07/06/2012 |
01204 821 | Affiniti Integrated Solutions Limited | 16/12/2011 |
01204 822 | Affiniti Integrated Solutions Limited | 16/12/2011 |
01204 823 | Affiniti Integrated Solutions Limited | 16/12/2011 |
01204 824 | Affiniti Integrated Solutions Limited | 16/12/2011 |
01204 827 | Affiniti Integrated Solutions Limited | 16/12/2011 |
01204 828 | Affiniti Integrated Solutions Limited | 16/12/2011 |
01204 830 | Virgin Media Limited | 27/06/2012 |
01204 84 | BT | 15/07/1994 |
01204 85 | BT | 15/07/1994 |
01204 86 | BT | 15/07/1994 |
01204 87 | Vodafone Ltd (C&W) | 30/07/2013 |
01204 880 | BT | 07/06/2012 |
01204 881 | BT | 07/06/2012 |
01204 882 | BT | 07/06/2012 |
01204 883 | BT | 07/06/2012 |
01204 884 | BT | 07/06/2012 |
01204 885 | BT | 07/06/2012 |
01204 886 | BT | 07/06/2012 |
01204 887 | BT | 07/06/2012 |
01204 888 | BT | 07/06/2012 |
01204 890 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 891 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 894 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 895 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 896 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 897 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 898 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 899 | Magrathea Telecommunications Limited | 17/11/2011 |
01204 900 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 901 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 902 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 903 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 904 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 905 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 908 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 909 | Vodafone Ltd (C&W) | 20/07/2018 |
01204 910 | Calltracks Limited | 23/12/2016 |
01204 911 | IOVOX Limited | 23/12/2016 |
01204 912 | Hyperoptic Ltd | 04/04/2017 |
01204 913 | IP Voice Networks Ltd | 20/09/2017 |
01204 914 | Fuse 2 Communications Ltd | 03/07/2017 |
01204 915 | Number Services Ltd. | 22/11/2018 |
01204 916 | BT | 23/10/2017 |
01204 917 | Gamma Telecom Holdings Ltd | 02/08/2017 |
01204 918 | DIDWW Ireland Limited | 19/10/2017 |
01204 919 | Adepteo Limited | 16/01/2017 |
01204 920 | Voxbone SA | 26/06/2018 |
01204 921 | TalkTalk Communications Limited | 15/10/2018 |
01204 922 | Sky UK Limited | 03/03/2020 |
01204 923 | Mission Labs Limited | 12/02/2019 |
01204 925 | SiPalto Ltd | 03/02/2020 |
01204 926 | WIZE ANALYTICS LIMITED | 29/04/2019 |
01204 927 | Gamma Telecom Holdings Ltd | 17/12/2018 |
01204 928 | BT | 30/03/2020 |
01204 929 | Gamma Telecom Holdings Ltd | 30/03/2020 |
01204 930 | Dial 9 Communications Limited | 09/12/2019 |
01204 931 | Served Up Limited | 01/03/2013 |
01204 932 | Served Up Limited | 01/03/2013 |
01204 933 | ICUK Computing Services Limited | 12/08/2019 |
01204 934 | BT | 14/10/2019 |
01204 935 | TELNYX UK LIMITED | 07/05/2020 |
01204 936 | Colt Technology Services | 23/06/2020 |
01204 937 | BT | 03/05/2019 |
01204 938 | Gamma Telecom Holdings Ltd | 04/11/2019 |
01204 939 | Gamma Telecom Holdings Ltd | 24/06/2019 |
01204 940 | GCI Network Solutions Ltd | 20/04/2017 |
01204 950 | Linear Telecoms Limited | 04/10/2010 |
01204 951 | VoiceHost Limited | 08/09/2020 |
01204 952 | Gamma Telecom Holdings Ltd | 16/09/2020 |
01204 955 | VOXYONDER NETWORK SERVICES UK LTD | 10/09/2020 |
01204 956 | BT | 05/08/2020 |
01204 957 | Gamma Telecom Holdings Ltd | 11/05/2021 |
01204 958 | Gamma Telecom Holdings Ltd | 20/01/2021 |
01204 959 | Mi Telecom Limited | 06/07/2020 |
01204 970 | Inclarity Communications Limited | 16/02/2011 |
01204 971 | Inclarity Communications Limited | 16/02/2011 |
01204 972 | Inclarity Communications Limited | 16/02/2011 |
01204 973 | Firstsound Ltd | 11/04/2011 |
01204 974 | Invoco Ltd | 21/09/2011 |
01204 975 | Inclarity Communications Limited | 16/02/2011 |
01204 977 | Orbtalk Limited | 06/09/2011 |
01204 978 | Internexus Networks Limited | 18/11/2011 |
01204 979 | Sky UK Limited | 20/06/2013 |
01204 984 | Six Degrees Technology Group Limited | 10/01/2020 |