01753 00 | Virgin Media Limited | 15/06/2000 |
01753 010 | NewVoiceMedia Limited | 25/09/2012 |
01753 011 | NewVoiceMedia Limited | 25/09/2012 |
01753 012 | NewVoiceMedia Limited | 25/09/2012 |
01753 013 | NewVoiceMedia Limited | 25/09/2012 |
01753 014 | NewVoiceMedia Limited | 25/09/2012 |
01753 015 | NewVoiceMedia Limited | 25/09/2012 |
01753 016 | NewVoiceMedia Limited | 25/09/2012 |
01753 017 | iHub 2 Limited | 31/08/2017 |
01753 130 | BT | 19/12/2014 |
01753 131 | BT | 19/12/2014 |
01753 132 | BT | 19/12/2014 |
01753 133 | BT | 19/12/2014 |
01753 134 | BT | 19/12/2014 |
01753 135 | BT | 19/12/2014 |
01753 136 | BT | 19/12/2014 |
01753 137 | BT | 19/12/2014 |
01753 138 | BT | 19/12/2014 |
01753 139 | BT | 19/12/2014 |
01753 180 | BT | 19/12/2014 |
01753 181 | BT | 19/12/2014 |
01753 182 | BT | 19/12/2014 |
01753 183 | BT | 19/12/2014 |
01753 184 | BT | 19/12/2014 |
01753 185 | BT | 19/12/2014 |
01753 186 | BT | 19/12/2014 |
01753 187 | BT | 19/12/2014 |
01753 188 | BT | 19/12/2014 |
01753 189 | BT | 19/12/2014 |
01753 200 | Icron Network Limited | 07/08/2006 |
01753 201 | Gamma Telecom Holdings Ltd | 05/04/2004 |
01753 202 | Magrathea Telecommunications Limited | 24/09/2004 |
01753 203 | Vodafone Ltd (Thus) | 25/01/2012 |
01753 204 | Vodafone Ltd (C&W) | 30/04/2020 |
01753 205 | Redcentric Solutions Limited | 05/06/2015 |
01753 206 | TalkTalk Communications Limited | 15/02/2005 |
01753 207 | Syntec Limited | 01/03/2005 |
01753 208 | AQL Wholesale Ltd | 01/11/2004 |
01753 209 | Linear Telecoms Limited | 18/10/2010 |
01753 21 | BT | 15/07/1994 |
01753 22 | BT | 15/07/1994 |
01753 23 | BT | 28/09/1994 |
01753 240 | Verizon UK Limited | 06/06/2002 |
01753 241 | Verizon UK Limited | 06/06/2002 |
01753 242 | Verizon UK Limited | 06/06/2002 |
01753 243 | Verizon UK Limited | 06/06/2002 |
01753 244 | Verizon UK Limited | 10/07/2002 |
01753 245 | Verizon UK Limited | 10/07/2002 |
01753 246 | Vodafone Ltd (C&W) | 10/09/2013 |
01753 247 | Verizon UK Limited | 11/03/2005 |
01753 248 | Invade International Ltd | 13/01/2016 |
01753 249 | FleXtel Limited | 16/11/2005 |
01753 250 | TelNG Limited | 28/02/2007 |
01753 251 | Gamma Telecom Holdings Ltd | 08/02/2007 |
01753 252 | Orange Business Holdings UK Limited | 26/02/2013 |
01753 253 | Localphone Limited | 14/05/2007 |
01753 254 | (AQ) LIMITED | 26/09/2012 |
01753 255 | Voiceflex Limited | 30/07/2007 |
01753 256 | VoIP-Un Limited | 05/11/2007 |
01753 257 | Magrathea Telecommunications Limited | 08/11/2007 |
01753 258 | Nationwide Telephone Assistance Ltd | 22/10/2007 |
01753 259 | Resilient PLC | 04/01/2007 |
01753 260 | Voxbone SA | 28/11/2007 |
01753 261 | Telecom2 Limited | 10/09/2009 |
01753 262 | TelXL Ltd | 12/02/2008 |
01753 263 | Digital Space Group Limited | 15/03/2016 |
01753 264 | Digital Space Group Limited | 20/05/2008 |
01753 265 | Nodemax Limited | 15/07/2008 |
01753 266 | Net-Work Internet Ltd | 30/05/2008 |
01753 267 | TalkTalk Communications Limited | 26/10/2011 |
01753 268 | Pulsant (Scotland) Limited | 17/02/2009 |
01753 269 | Verizon UK Limited | 12/09/2008 |
01753 27 | BT | 27/10/1997 |
01753 28 | BT | 11/08/1997 |
01753 290 | Inet Telecoms Ltd (Voipfone) | 24/09/2008 |
01753 293 | Barritel Limited | 08/10/2008 |
01753 294 | Served Up Limited | 22/10/2008 |
01753 298 | Andrews & Arnold (Numbers) Ltd | 30/03/2009 |
01753 299 | Vonage Limited | 21/01/2015 |
01753 300 | Phone Co-Op Numbering Limited | 23/12/2010 |
01753 302 | Vectone Mobile Limited | 01/07/2009 |
01753 303 | Gamma Telecom Holdings Ltd | 14/05/2009 |
01753 304 | Via-Vox Limited | 15/07/2009 |
01753 305 | Telecoms World PLC | 23/06/2009 |
01753 306 | Gamma Telecom Holdings Ltd | 30/03/2015 |
01753 307 | Magrathea Telecommunications Limited | 14/08/2009 |
01753 308 | GCI Network Solutions Ltd | 25/04/2017 |
01753 309 | Gamma Telecom Holdings Ltd | 30/09/2009 |
01753 310 | Gamma Telecom Holdings Ltd | 04/02/2015 |
01753 311 | Verizon UK Limited | 06/11/2009 |
01753 312 | Sky UK Limited | 26/02/2015 |
01753 313 | Gamma Telecom Holdings Ltd | 03/10/2013 |
01753 314 | Gamma Telecom Holdings Ltd | 18/01/2010 |
01753 315 | TalkTalk Communications Limited | 03/02/2010 |
01753 316 | Buzz Networks Limited | 24/02/2010 |
01753 317 | TalkTalk Communications Limited | 30/03/2015 |
01753 318 | Liquid 11 Limited | 20/04/2010 |
01753 319 | I-NET COMMUNICATIONS GROUP PLC | 13/01/2010 |
01753 320 | Numbergroup Utilities Ltd | 02/11/2010 |
01753 322 | Calltracks Limited | 23/09/2013 |
01753 323 | Suretec Systems Ltd | 12/05/2010 |
01753 324 | Sky UK Limited | 24/06/2013 |
01753 325 | Windsor Telecom Ltd | 22/07/2010 |
01753 326 | Core Telecom Limited | 06/08/2010 |
01753 328 | Plus Telecom Limited | 24/09/2010 |
01753 330 | Gamma Telecom Holdings Ltd | 04/02/2015 |
01753 331 | Invosys Limited | 15/02/2012 |
01753 332 | Affiniti Integrated Solutions Limited | 09/02/2015 |
01753 333 | IP Wholesale Limited | 01/06/2017 |
01753 334 | TeleWare Group PLC | 21/02/2013 |
01753 336 | Magrathea Telecommunications Limited | 12/04/2011 |
01753 337 | Vodafone Ltd (C&W) | 10/09/2013 |
01753 339 | Sky UK Limited | 24/06/2013 |
01753 340 | Sky UK Limited | 24/06/2013 |
01753 341 | Numbers Plus Ltd | 28/07/2011 |
01753 342 | Orbtalk Limited | 23/08/2011 |
01753 343 | Media Hawk Ltd | 26/09/2011 |
01753 348 | Hello Telecom (UK) Limited | 23/11/2011 |
01753 350 | Sky UK Limited | 24/06/2013 |
01753 351 | GCI Network Solutions Ltd | 30/03/2017 |
01753 354 | API Telecom Limited | 10/04/2012 |
01753 355 | ICC Networks Ltd | 17/04/2012 |
01753 356 | Verizon UK Limited | 23/04/2012 |
01753 357 | TalkTalk Communications Limited | 21/05/2012 |
01753 358 | TalkTalk Communications Limited | 04/04/2012 |
01753 359 | Invoco Ltd | 25/04/2012 |
01753 360 | GCI Network Solutions Ltd | 26/04/2017 |
01753 361 | GTT-EMEA LTD | 14/10/2021 |
01753 362 | Gamma Telecom Holdings Ltd | 27/04/2006 |
01753 363 | Colt Technology Services | 18/01/2005 |
01753 364 | Six Degrees Technology Group Limited | 14/01/2020 |
01753 365 | GCI Network Solutions Ltd | 26/04/2017 |
01753 366 | Hospedia Limited | 04/07/2003 |
01753 367 | Colt Technology Services | 17/04/2015 |
01753 369 | VoiceHost Limited | 22/06/2010 |
01753 370 | Gamma Telecom Holdings Ltd | 19/04/2013 |
01753 371 | TalkTalk Communications Limited | 02/05/2013 |
01753 372 | Sky UK Limited | 03/12/2013 |
01753 373 | Kalnet4U Ltd | 30/05/2013 |
01753 374 | Sky UK Limited | 17/07/2013 |
01753 375 | Sky UK Limited | 17/07/2013 |
01753 376 | BT | 19/11/2013 |
01753 377 | Redwood Technologies Ltd | 15/11/2018 |
01753 378 | BT | 14/11/2013 |
01753 379 | Gamma Telecom Holdings Ltd | 10/01/2014 |
01753 380 | Sky UK Limited | 24/06/2013 |
01753 382 | Sky UK Limited | 24/06/2013 |
01753 383 | IOVOX Limited | 04/07/2012 |
01753 384 | Sky UK Limited | 24/06/2013 |
01753 385 | Verizon UK Limited | 03/04/2013 |
01753 386 | Colt Technology Services | 30/01/2013 |
01753 387 | Gamma Telecom Holdings Ltd | 20/09/2012 |
01753 388 | Intrado Cloud Solutions Limited | 15/01/2013 |
01753 389 | Content Guru Limited | 12/10/2012 |
01753 390 | Gamma Telecom Holdings Ltd | 07/02/2018 |
01753 391 | Telappliant Ltd | 05/04/2018 |
01753 392 | Gamma Telecom Holdings Ltd | 13/04/2018 |
01753 393 | TalkTalk Communications Limited | 13/04/2018 |
01753 394 | Colt Technology Services | 04/06/2018 |
01753 395 | Magrathea Telecommunications Limited | 07/06/2018 |
01753 396 | Gamma Telecom Holdings Ltd | 23/07/2018 |
01753 398 | Sky UK Limited | 30/08/2018 |
01753 399 | Affiniti Integrated Solutions Limited | 24/04/2018 |
01753 400 | Virgin Media Limited | 28/06/2012 |
01753 401 | Virgin Media Limited | 28/06/2012 |
01753 402 | Virgin Media Limited | 28/06/2012 |
01753 403 | Virgin Media Limited | 28/06/2012 |
01753 404 | Virgin Media Limited | 28/06/2012 |
01753 408 | Virgin Media Limited | 28/06/2012 |
01753 409 | Virgin Media Limited | 28/06/2012 |
01753 410 | BT | 01/06/2002 |
01753 411 | BT | 01/06/2002 |
01753 413 | Digital Mail Limited | 13/01/2006 |
01753 414 | Inclarity Communications Limited | 09/11/2012 |
01753 415 | TTNC Limited | 15/11/2013 |
01753 417 | Verizon UK Limited | 03/02/2006 |
01753 418 | Spitfire Network Services Limited | 27/06/2006 |
01753 419 | Virgin Media Limited | 09/06/2006 |
01753 420 | Sky UK Limited | 24/06/2013 |
01753 421 | Digital Space Group Limited | 12/04/2016 |
01753 422 | Lumen Technologies UK Limited | 06/04/2006 |
01753 423 | Lumen Technologies UK Limited | 06/04/2006 |
01753 424 | TalkTalk Communications Limited | 19/06/2006 |
01753 425 | Vodafone Ltd (C&W) | 11/09/2013 |
01753 426 | Virgin Media Limited | 22/06/2006 |
01753 427 | Lumen Technologies UK Limited | 06/04/2006 |
01753 428 | Simwood eSMS Limited | 19/07/2006 |
01753 429 | TalkTalk Communications Limited | 25/03/2014 |
01753 43 | Vodafone Ltd (C&W) | 11/09/2013 |
01753 44 | Virgin Media Limited | 18/03/2016 |
01753 452 | Virgin Media Limited | 28/06/2012 |
01753 453 | Virgin Media Limited | 28/06/2012 |
01753 454 | Virgin Media Limited | 28/06/2012 |
01753 460 | Connect Telecom UK Limited | 18/04/2005 |
01753 462 | Vodafone Ltd (C&W) | 18/06/2013 |
01753 463 | AQL Wholesale Ltd | 04/08/2006 |
01753 464 | Affiniti Integrated Solutions Limited | 05/06/2002 |
01753 465 | Affiniti Integrated Solutions Limited | 05/06/2002 |
01753 466 | Affiniti Integrated Solutions Limited | 05/06/2002 |
01753 467 | Affiniti Integrated Solutions Limited | 05/06/2002 |
01753 468 | Affiniti Integrated Solutions Limited | 05/06/2002 |
01753 47 | Virgin Media Limited | 18/03/2016 |
01753 48 | BT | 06/10/1995 |
01753 49 | BT | 21/03/1997 |
01753 50 | BT | 15/07/1994 |
01753 51 | BT | 15/07/1994 |
01753 52 | BT | 15/07/1994 |
01753 53 | BT | 15/07/1994 |
01753 54 | BT | 15/07/1994 |
01753 55 | BT | 15/07/1994 |
01753 56 | BT | 15/07/1994 |
01753 57 | BT | 15/07/1994 |
01753 58 | BT | 15/07/1994 |
01753 59 | BT | 15/07/1994 |
01753 60 | Vodafone Ltd (C&W) | 11/09/2013 |
01753 61 | BT | 15/07/1994 |
01753 62 | BT | 15/07/1994 |
01753 63 | BT | 15/07/1994 |
01753 64 | BT | 15/07/1994 |
01753 65 | BT | 15/07/1994 |
01753 66 | BT | 15/07/1994 |
01753 67 | Virgin Media Limited | 18/03/2016 |
01753 68 | BT | 15/07/1994 |
01753 69 | BT | 15/07/1994 |
01753 70 | Vodafone Ltd (C&W) | 11/09/2013 |
01753 71 | Virgin Media Limited | 18/03/2016 |
01753 72 | Vodafone Ltd (C&W) | 11/09/2013 |
01753 73 | Virgin Media Limited | 18/03/2016 |
01753 74 | Virgin Media Limited | 18/03/2016 |
01753 75 | BT | 15/07/1994 |
01753 76 | BT | 15/07/1994 |
01753 77 | Virgin Media Limited | 18/03/2016 |
01753 78 | BT | 16/02/1995 |
01753 79 | Virgin Media Limited | 18/03/2016 |
01753 80 | Virgin Media Limited | 18/03/2016 |
01753 81 | Vodafone Ltd (C&W) | 11/09/2013 |
01753 82 | BT | 15/07/1994 |
01753 83 | BT | 15/07/1994 |
01753 84 | BT | 15/07/1994 |
01753 85 | BT | 15/07/1994 |
01753 86 | BT | 15/07/1994 |
01753 87 | BT | 15/07/1994 |
01753 88 | BT | 15/07/1994 |
01753 89 | BT | 15/07/1994 |
01753 900 | Ziron Limited | 15/05/2014 |
01753 901 | Sky UK Limited | 15/09/2014 |
01753 902 | Sky UK Limited | 07/09/2015 |
01753 903 | IOVOX Limited | 23/10/2014 |
01753 904 | Hyperoptic Ltd | 12/05/2016 |
01753 905 | YayYay Limited | 24/04/2015 |
01753 906 | BT | 07/09/2015 |
01753 907 | Gamma Telecom Holdings Ltd | 30/07/2014 |
01753 908 | BT | 06/03/2014 |
01753 910 | Gamma Telecom Holdings Ltd | 25/11/2015 |
01753 911 | BT | 08/02/2016 |
01753 912 | Gamma Telecom Holdings Ltd | 16/02/2016 |
01753 913 | Colt Technology Services | 19/11/2015 |
01753 914 | Sky UK Limited | 30/03/2016 |
01753 915 | Gamma Telecom Holdings Ltd | 14/09/2016 |
01753 916 | Gamma Telecom Holdings Ltd | 12/05/2016 |
01753 917 | Sky UK Limited | 23/09/2016 |
01753 919 | I.T Communications Limited | 21/03/2016 |
01753 920 | Media Hawk Ltd | 11/05/2021 |
01753 924 | Gamma Telecom Holdings Ltd | 18/06/2021 |
01753 941 | BT | 19/10/2018 |
01753 942 | Voxbone SA | 19/09/2019 |
01753 943 | Colt Technology Services | 03/12/2019 |
01753 944 | Gamma Telecom Holdings Ltd | 29/03/2019 |
01753 945 | Gamma Telecom Holdings Ltd | 11/01/2019 |
01753 960 | Number Services Ltd. | 22/11/2018 |
01753 961 | Calltracks Limited | 19/06/2017 |
01753 962 | Entanet International Ltd | 05/12/2017 |
01753 963 | DIDWW Ireland Limited | 19/10/2017 |
01753 964 | Verizon UK Limited | 11/01/2018 |
01753 965 | BT | 29/08/2018 |
01753 966 | Alnitak GmbH | 25/04/2017 |
01753 967 | Gamma Telecom Holdings Ltd | 20/12/2016 |
01753 968 | Gamma Telecom Holdings Ltd | 20/03/2017 |
01753 969 | Gamma Telecom Holdings Ltd | 07/06/2017 |
01753 970 | 24 SEVEN CLOUD COMMUNICATIONS LTD | 21/01/2020 |
01753 971 | BT | 13/10/2020 |
01753 972 | Colt Technology Services | 05/08/2020 |
01753 973 | Hyperoptic Ltd | 11/11/2019 |
01753 974 | Sky UK Limited | 14/12/2020 |
01753 975 | TGL Services (UK) Ltd | 03/12/2020 |
01753 976 | Colt Technology Services | 23/03/2021 |
01753 977 | Mi Telecom Limited | 03/07/2020 |
01753 978 | Gamma Telecom Holdings Ltd | 22/02/2021 |
01753 979 | Affiniti Integrated Solutions Limited | 14/10/2019 |
01753 980 | Gamma Telecom Holdings Ltd | 16/12/2020 |
01753 981 | Gamma Telecom Holdings Ltd | 11/12/2019 |
01753 982 | Colt Technology Services | 07/05/2020 |
01753 983 | BT | 26/09/2019 |
01753 984 | Colt Technology Services | 07/05/2020 |
01753 985 | SiPalto Ltd | 17/02/2020 |
01753 986 | Colt Technology Services | 07/05/2020 |
01753 987 | Gamma Telecom Holdings Ltd | 19/08/2020 |
01753 988 | Belgacom International Carrier Services SA | 24/04/2020 |
01753 989 | Gamma Telecom Holdings Ltd | 01/08/2019 |