01256 00 | Virgin Media Limited | 03/05/2001 |
01256 16 | BT | 10/06/2016 |
01256 17 | BT | 10/06/2016 |
01256 200 | Syntec Limited | 13/07/2010 |
01256 201 | Syntec Limited | 13/07/2010 |
01256 202 | Syntec Limited | 13/07/2010 |
01256 203 | Syntec Limited | 13/07/2010 |
01256 204 | Syntec Limited | 13/07/2010 |
01256 205 | Syntec Limited | 13/07/2010 |
01256 206 | Core Telecom Limited | 05/08/2010 |
01256 210 | Linear Telecoms Limited | 06/10/2010 |
01256 211 | Sky UK Limited | 21/06/2013 |
01256 212 | TalkTalk Communications Limited | 02/08/2011 |
01256 213 | Invoco Ltd | 21/09/2011 |
01256 214 | Media Hawk Ltd | 26/09/2011 |
01256 215 | TGL Services (UK) Ltd | 02/02/2015 |
01256 216 | Internexus Networks Limited | 18/11/2011 |
01256 217 | Bicom Systems EURL | 02/03/2012 |
01256 219 | API Telecom Limited | 26/03/2012 |
01256 220 | GCI Network Solutions Ltd | 20/04/2017 |
01256 221 | Sky UK Limited | 09/08/2013 |
01256 222 | GCI Network Solutions Ltd | 20/04/2017 |
01256 223 | iHub 2 Limited | 18/05/2016 |
01256 224 | BT | 25/11/2013 |
01256 225 | TalkTalk Communications Limited | 10/01/2014 |
01256 226 | Redwood Technologies Ltd | 15/11/2018 |
01256 227 | TalkTalk Communications Limited | 10/11/2014 |
01256 228 | IOVOX Limited | 27/03/2014 |
01256 229 | Sky UK Limited | 16/12/2014 |
01256 230 | Sky UK Limited | 10/09/2019 |
01256 231 | TELNYX UK LIMITED | 07/05/2020 |
01256 232 | TalkTalk Communications Limited | 26/03/2019 |
01256 233 | Digital Space Group Limited | 12/04/2016 |
01256 234 | ICUK Computing Services Limited | 20/09/2019 |
01256 236 | Gamma Telecom Holdings Ltd | 30/04/2020 |
01256 237 | Vispa Limited | 13/05/2020 |
01256 238 | SiPalto Ltd | 17/06/2020 |
01256 239 | EG TECHNOLOGIES LIMITED | 19/06/2020 |
01256 240 | Digital Mail Limited | 02/02/2007 |
01256 241 | TelNG Limited | 26/02/2007 |
01256 242 | TalkTalk Communications Limited | 21/03/2007 |
01256 243 | Sky UK Limited | 09/08/2013 |
01256 244 | Localphone Limited | 24/04/2007 |
01256 246 | Commi Holdings Limited | 21/11/2016 |
01256 247 | Voiceflex Limited | 27/07/2007 |
01256 249 | Resilient PLC | 14/12/2006 |
01256 250 | GTT-EMEA LTD | 14/10/2021 |
01256 251 | GTT-EMEA LTD | 14/10/2021 |
01256 252 | GTT-EMEA LTD | 14/10/2021 |
01256 253 | GTT-EMEA LTD | 14/10/2021 |
01256 254 | GTT-EMEA LTD | 14/10/2021 |
01256 255 | GTT-EMEA LTD | 14/10/2021 |
01256 256 | GTT-EMEA LTD | 14/10/2021 |
01256 257 | GTT-EMEA LTD | 14/10/2021 |
01256 258 | GTT-EMEA LTD | 14/10/2021 |
01256 259 | GTT-EMEA LTD | 14/10/2021 |
01256 260 | Dial 9 Communications Limited | 09/12/2019 |
01256 261 | Mi Telecom Limited | 03/07/2020 |
01256 262 | Gamma Telecom Holdings Ltd | 22/03/2019 |
01256 263 | BT | 23/12/2019 |
01256 264 | Gamma Telecom Holdings Ltd | 09/03/2020 |
01256 265 | Gamma Telecom Holdings Ltd | 09/03/2020 |
01256 266 | TelXL Ltd | 01/06/2010 |
01256 267 | TelXL Ltd | 01/06/2010 |
01256 268 | Gamma Telecom Holdings Ltd | 12/08/2019 |
01256 269 | TelXL Ltd | 01/06/2010 |
01256 270 | (AQ) LIMITED | 17/10/2011 |
01256 271 | Digital Space Group Limited | 29/11/2007 |
01256 272 | VoIP-Un Limited | 26/10/2007 |
01256 273 | Telecom2 Limited | 10/09/2009 |
01256 274 | Voxbone SA | 10/12/2007 |
01256 275 | Digital Space Group Limited | 15/03/2016 |
01256 276 | Nodemax Limited | 07/07/2008 |
01256 277 | Net-Work Internet Ltd | 09/06/2008 |
01256 278 | Nationwide Telephone Assistance Ltd | 14/07/2008 |
01256 279 | TalkTalk Communications Limited | 13/02/2013 |
01256 280 | BT | 23/05/2016 |
01256 281 | BT | 23/05/2016 |
01256 282 | BT | 23/05/2016 |
01256 283 | BT | 23/05/2016 |
01256 284 | BT | 23/05/2016 |
01256 285 | BT | 23/05/2016 |
01256 286 | BT | 23/05/2016 |
01256 287 | BT | 23/05/2016 |
01256 288 | BT | 23/05/2016 |
01256 289 | BT | 23/05/2016 |
01256 297 | Spitfire Network Services Limited | 13/05/2010 |
01256 30 | BT | 15/07/1994 |
01256 31 | BT | 15/07/1994 |
01256 32 | BT | 30/04/1997 |
01256 33 | BT | 15/07/1994 |
01256 34 | BT | 15/07/1994 |
01256 35 | BT | 30/04/1997 |
01256 36 | BT | 30/04/1997 |
01256 37 | BT | 15/07/1994 |
01256 38 | BT | 15/07/1994 |
01256 39 | BT | 15/07/1994 |
01256 40 | BT | 15/07/1994 |
01256 41 | Virgin Media Limited | 17/10/1994 |
01256 420 | Virgin Media Limited | 17/10/1994 |
01256 421 | Virgin Media Limited | 17/10/1994 |
01256 422 | Virgin Media Limited | 17/10/1994 |
01256 423 | Virgin Media Limited | 17/10/1994 |
01256 424 | Virgin Media Limited | 17/10/1994 |
01256 425 | Virgin Media Limited | 17/10/1994 |
01256 426 | Virgin Media Limited | 17/10/1994 |
01256 427 | Virgin Media Limited | 17/10/1994 |
01256 428 | Virgin Media Limited | 17/10/1994 |
01256 429 | Virgin Media Limited | 17/10/1994 |
01256 430 | Virgin Media Limited | 22/02/2010 |
01256 431 | Virgin Media Limited | 22/02/2010 |
01256 432 | Virgin Media Limited | 22/02/2010 |
01256 433 | Virgin Media Limited | 22/02/2010 |
01256 436 | Colt Technology Services | 05/03/2021 |
01256 437 | BT | 21/07/2021 |
01256 439 | Virgin Media Limited | 22/02/2010 |
01256 441 | Affiniti Integrated Solutions Limited | 16/03/2010 |
01256 442 | Affiniti Integrated Solutions Limited | 16/03/2010 |
01256 444 | Affiniti Integrated Solutions Limited | 16/03/2010 |
01256 445 | Affiniti Integrated Solutions Limited | 16/03/2010 |
01256 449 | Affiniti Integrated Solutions Limited | 16/03/2010 |
01256 46 | BT | 15/07/1994 |
01256 47 | BT | 15/07/1994 |
01256 48 | BT | 15/07/1994 |
01256 49 | BT | 15/07/1994 |
01256 50 | Syntec Limited | 06/01/2006 |
01256 510 | Orbtalk Limited | 08/04/2011 |
01256 511 | 24 SEVEN CLOUD COMMUNICATIONS LTD | 30/09/2019 |
01256 512 | Nexbridge Communications Limited | 06/03/2012 |
01256 513 | Hello Telecom (UK) Limited | 14/04/2011 |
01256 515 | IOVOX Limited | 03/02/2014 |
01256 516 | Sky UK Limited | 03/12/2013 |
01256 517 | BT | 25/07/2012 |
01256 518 | Ziron Limited | 30/07/2012 |
01256 519 | ICC Networks Ltd | 12/04/2012 |
01256 52 | TTNC Limited | 25/11/2013 |
01256 532 | Solutios Limited | 28/08/2008 |
01256 533 | Inet Telecoms Ltd (Voipfone) | 24/09/2008 |
01256 535 | Barritel Limited | 11/11/2008 |
01256 536 | Vonage Limited | 26/01/2015 |
01256 537 | IPV6 Limited | 26/01/2009 |
01256 538 | Mars Communications Limited | 03/02/2009 |
01256 539 | Telecoms World PLC | 09/03/2009 |
01256 540 | Andrews & Arnold (Numbers) Ltd | 27/02/2009 |
01256 541 | TalkTalk Communications Limited | 20/03/2009 |
01256 542 | Dynamic Mobile Billing Limited | 09/04/2009 |
01256 543 | Media Telecom Ltd | 05/08/2010 |
01256 544 | Nexus Telecommunications Limited | 31/03/2009 |
01256 545 | Invade International Ltd | 12/01/2016 |
01256 546 | Vectone Mobile Limited | 29/06/2009 |
01256 547 | CFL Communications Ltd | 08/07/2009 |
01256 548 | TeleWare Group PLC | 14/08/2009 |
01256 555 | Served Up Limited | 29/06/2010 |
01256 557 | Served Up Limited | 29/06/2010 |
01256 558 | Served Up Limited | 29/06/2010 |
01256 559 | Served Up Limited | 29/06/2010 |
01256 560 | Sky UK Limited | 21/06/2013 |
01256 570 | M247 Ltd | 29/05/2015 |
01256 573 | Affiniti Integrated Solutions Limited | 09/02/2015 |
01256 574 | I-NET COMMUNICATIONS GROUP PLC | 12/01/2010 |
01256 575 | GCI Network Solutions Ltd | 19/04/2017 |
01256 576 | Atomstream Limited | 25/02/2010 |
01256 577 | Gamma Telecom Holdings Ltd | 11/03/2021 |
01256 578 | Buzz Networks Limited | 01/03/2010 |
01256 579 | Digitech Solutions Global Limited | 23/04/2010 |
01256 580 | E164 Ltd | 23/03/2010 |
01256 581 | Telappliant Ltd | 28/05/2010 |
01256 582 | Calltracks Limited | 19/09/2013 |
01256 583 | Minotaur Telecom Limited | 31/01/2013 |
01256 584 | Windsor Telecom Ltd | 19/07/2010 |
01256 585 | Gamma Telecom Holdings Ltd | 13/02/2020 |
01256 586 | Belgacom International Carrier Services SA | 20/06/2016 |
01256 587 | Gamma Telecom Holdings Ltd | 26/10/2016 |
01256 588 | Voxbone SA | 08/04/2016 |
01256 589 | Sky UK Limited | 10/06/2016 |
01256 590 | BT | 23/02/2018 |
01256 591 | Gamma Telecom Holdings Ltd | 19/06/2018 |
01256 592 | Simwood eSMS Limited | 10/03/2010 |
01256 593 | BT | 02/10/2018 |
01256 594 | DIDWW Ireland Limited | 15/10/2018 |
01256 595 | Gamma Telecom Holdings Ltd | 15/10/2018 |
01256 596 | Colt Technology Services | 24/08/2018 |
01256 597 | Gamma Telecom Holdings Ltd | 20/11/2018 |
01256 598 | Telecom 10 Ltd | 30/05/2018 |
01256 599 | Club Communications Ltd | 18/05/2018 |
01256 60 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 610 | Six Degrees Technology Group Limited | 13/01/2020 |
01256 611 | Six Degrees Technology Group Limited | 13/01/2020 |
01256 612 | Six Degrees Technology Group Limited | 13/01/2020 |
01256 613 | Six Degrees Technology Group Limited | 13/01/2020 |
01256 614 | Six Degrees Technology Group Limited | 13/01/2020 |
01256 620 | BT | 23/05/2016 |
01256 621 | BT | 23/05/2016 |
01256 622 | BT | 23/05/2016 |
01256 623 | BT | 23/05/2016 |
01256 624 | BT | 23/05/2016 |
01256 625 | BT | 23/05/2016 |
01256 626 | BT | 23/05/2016 |
01256 627 | BT | 23/05/2016 |
01256 628 | BT | 23/05/2016 |
01256 629 | BT | 23/05/2016 |
01256 63 | Gamma Telecom Holdings Ltd | 01/03/2004 |
01256 640 | Inclarity Communications Limited | 16/02/2011 |
01256 641 | Inclarity Communications Limited | 16/02/2011 |
01256 642 | Inclarity Communications Limited | 16/02/2011 |
01256 643 | BT | 13/01/2021 |
01256 644 | Colt Technology Services | 30/09/2020 |
01256 645 | Inclarity Communications Limited | 16/02/2011 |
01256 646 | VOXYONDER NETWORK SERVICES UK LTD | 16/09/2020 |
01256 647 | Sky UK Limited | 12/03/2021 |
01256 648 | Gamma Telecom Holdings Ltd | 25/11/2020 |
01256 65 | Vodafone Ltd (Energis) | 26/05/2006 |
01256 660 | Vodafone Ltd (Thus) | 17/01/2012 |
01256 666 | Vodafone Ltd (C&W) | 01/04/2019 |
01256 669 | Vodafone Ltd (Thus) | 17/01/2012 |
01256 670 | Calltracks Limited | 12/01/2017 |
01256 671 | Number Services Ltd. | 22/11/2018 |
01256 672 | IP Voice Networks Ltd | 20/09/2017 |
01256 673 | Media Hawk Ltd | 23/10/2017 |
01256 674 | Colt Technology Services | 06/10/2017 |
01256 675 | NFON UK Ltd | 20/09/2017 |
01256 676 | Adepteo Limited | 16/01/2017 |
01256 677 | IOVOX Limited | 23/12/2016 |
01256 678 | Gamma Telecom Holdings Ltd | 01/06/2017 |
01256 679 | Gamma Telecom Holdings Ltd | 30/11/2017 |
01256 68 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 69 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 70 | BT | 15/07/1994 |
01256 710 | Redcentric Solutions Limited | 05/06/2015 |
01256 712 | Redcentric Solutions Limited | 05/06/2015 |
01256 717 | Redcentric Solutions Limited | 05/06/2015 |
01256 719 | Redcentric Solutions Limited | 05/06/2015 |
01256 72 | BT | 15/07/1994 |
01256 73 | Lumen Technologies UK Limited | 22/10/1996 |
01256 74 | BT | 15/07/1994 |
01256 75 | Virgin Media Limited | 23/01/1998 |
01256 76 | BT | 15/07/1994 |
01256 77 | BT | 15/07/1994 |
01256 78 | BT | 15/07/1994 |
01256 79 | BT | 15/07/1994 |
01256 80 | Magrathea Telecommunications Limited | 24/09/2004 |
01256 81 | BT | 15/07/1994 |
01256 82 | Verizon UK Limited | 25/03/1999 |
01256 83 | AQL Wholesale Ltd | 01/11/2004 |
01256 84 | BT | 15/07/1994 |
01256 85 | BT | 15/07/1994 |
01256 86 | BT | 15/07/1994 |
01256 88 | BT | 15/07/1994 |
01256 89 | BT | 15/07/1994 |
01256 900 | Reality Network Services Limited | 16/03/2010 |
01256 91 | FleXtel Limited | 20/10/2005 |
01256 92 | Citrus Telecommunications Ltd | 09/08/2005 |
01256 930 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 931 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 932 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 933 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 934 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 935 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 936 | Vodafone Ltd (C&W) | 03/10/2013 |
01256 950 | Sark Telecom B.V. | 11/08/2010 |
01256 951 | VoiceHost Limited | 26/08/2010 |
01256 952 | Numbergroup Utilities Ltd | 08/11/2010 |
01256 953 | Telephone Box Limited | 24/11/2010 |
01256 955 | Phone Co-Op Numbering Limited | 16/12/2010 |
01256 957 | Invosys Limited | 26/01/2012 |
01256 958 | IP Wholesale Limited | 01/06/2017 |
01256 959 | Sky UK Limited | 21/06/2013 |
01256 960 | YayYay Limited | 23/04/2015 |
01256 962 | BT | 20/10/2015 |
01256 963 | I.T Communications Limited | 20/11/2015 |
01256 964 | Sky UK Limited | 02/09/2015 |
01256 966 | Lanonyx Telecom Limited | 03/03/2015 |
01256 967 | Alnitak GmbH | 14/01/2016 |
01256 968 | Fuse 2 Communications Ltd | 03/07/2017 |
01256 970 | Digitech Solutions Global Limited | 22/06/2012 |
01256 971 | Numbergroup Utilities Ltd | 29/04/2019 |
01256 972 | Sky UK Limited | 21/06/2013 |
01256 973 | Kalnet4U Ltd | 08/05/2013 |
01256 974 | Sky UK Limited | 03/12/2013 |
01256 975 | Liquid 11 Limited | 13/06/2013 |
01256 976 | Colt Technology Services | 07/02/2013 |
01256 977 | Content Guru Limited | 12/10/2012 |
01256 978 | XoverX Ltd | 01/05/2013 |
01256 979 | Intrado Cloud Solutions Limited | 15/01/2013 |
01256 980 | Vodafone Ltd (C&W) | 03/10/2013 |