0239 200 | Gamma Telecom Holdings Ltd | 05/04/2004 |
0239 201 | Reality Network Services Limited | 18/07/2005 |
0239 202 | TalkTalk Communications Limited | 14/10/2013 |
0239 203 | Linear Telecoms Limited | 19/10/2010 |
0239 204 | Sky UK Limited | 09/08/2013 |
0239 205 | Syntec Limited | 01/11/2005 |
0239 206 | Colt Technology Services | 23/05/2013 |
0239 207 | Virgin Media Limited | 24/01/2006 |
0239 209 | FleXtel Limited | 16/11/2005 |
0239 210 | TGL Services (UK) Ltd | 02/02/2015 |
0239 211 | IOVOX Limited | 22/08/2013 |
0239 212 | Six Degrees Technology Group Limited | 08/04/2020 |
0239 213 | BT | 12/10/2004 |
0239 214 | GTT-EMEA LTD | 14/10/2021 |
0239 215 | Vodafone Ltd (C&W) | 01/04/2019 |
0239 216 | WAVECREST NETWORKS LIMITED | 16/12/2019 |
0239 217 | TalkTalk Communications Limited | 25/05/2005 |
0239 219 | Inclarity Communications Limited | 08/11/2012 |
0239 220 | BT | 26/05/1999 |
0239 221 | BT | 26/05/1999 |
0239 222 | BT | 26/05/1999 |
0239 223 | BT | 26/05/1999 |
0239 224 | BT | 26/05/1999 |
0239 225 | BT | 26/05/1999 |
0239 226 | BT | 26/05/1999 |
0239 227 | Vodafone Ltd (Energis) | 26/05/2006 |
0239 228 | BT | 26/05/1999 |
0239 229 | BT | 26/05/1999 |
0239 230 | BT | 26/05/1999 |
0239 231 | BT | 26/05/1999 |
0239 232 | BT | 26/05/1999 |
0239 233 | BT | 26/05/1999 |
0239 234 | Virgin Media Limited | 26/05/1999 |
0239 235 | Virgin Media Limited | 26/05/1999 |
0239 236 | Virgin Media Limited | 26/05/1999 |
0239 237 | BT | 26/05/1999 |
0239 238 | BT | 26/05/1999 |
0239 239 | Vodafone Ltd (C&W) | 10/09/2013 |
0239 240 | Vodafone Ltd (C&W) | 10/09/2013 |
0239 241 | BT | 26/05/1999 |
0239 242 | Virgin Media Limited | 26/05/1999 |
0239 243 | Virgin Media Limited | 26/05/1999 |
0239 244 | BT | 26/05/1999 |
0239 245 | BT | 26/05/1999 |
0239 246 | BT | 26/05/1999 |
0239 247 | BT | 26/05/1999 |
0239 248 | BT | 26/05/1999 |
0239 249 | BT | 26/05/1999 |
0239 250 | BT | 26/05/1999 |
0239 251 | BT | 26/05/1999 |
0239 252 | BT | 26/05/1999 |
0239 253 | BT | 26/05/1999 |
0239 254 | BT | 26/05/1999 |
0239 255 | BT | 26/05/1999 |
0239 256 | BT | 26/05/1999 |
0239 257 | BT | 26/05/1999 |
0239 258 | BT | 26/05/1999 |
0239 259 | BT | 26/05/1999 |
0239 260 | BT | 26/05/1999 |
0239 261 | Virgin Media Limited | 26/05/1999 |
0239 262 | BT | 26/05/1999 |
0239 263 | BT | 26/05/1999 |
0239 264 | Virgin Media Limited | 26/05/1999 |
0239 265 | BT | 26/05/1999 |
0239 266 | BT | 26/05/1999 |
0239 267 | BT | 26/05/1999 |
0239 268 | Virgin Media Limited | 26/05/1999 |
0239 269 | BT | 26/05/1999 |
0239 270 | Vodafone Ltd (C&W) | 10/09/2013 |
0239 271 | Virgin Media Limited | 26/05/1999 |
0239 272 | BT | 26/05/1999 |
0239 273 | BT | 26/05/1999 |
0239 274 | Vodafone Ltd (C&W) | 10/09/2013 |
0239 275 | BT | 26/05/1999 |
0239 276 | Vodafone Ltd (C&W) | 10/09/2013 |
0239 277 | BT | 26/05/1999 |
0239 278 | Virgin Media Limited | 26/05/1999 |
0239 279 | Virgin Media Limited | 26/05/1999 |
0239 280 | Affiniti Integrated Solutions Limited | 14/08/2000 |
0239 281 | BT | 26/05/1999 |
0239 282 | BT | 26/05/1999 |
0239 283 | BT | 26/05/1999 |
0239 284 | BT | 26/05/1999 |
0239 285 | BT | 26/05/1999 |
0239 286 | BT | 26/05/1999 |
0239 287 | BT | 26/05/1999 |
0239 288 | BT | 26/05/1999 |
0239 289 | BT | 26/05/1999 |
0239 290 | Virgin Media Limited | 26/05/1999 |
0239 291 | Daisy Communications Ltd | 16/12/2010 |
0239 292 | Virgin Media Limited | 10/06/2002 |
0239 294 | Verizon UK Limited | 26/05/1999 |
0239 295 | Lumen Technologies UK Limited | 06/12/2003 |
0239 296 | Vodafone Ltd (C&W) | 10/09/2013 |
0239 297 | Redcentric Solutions Limited | 05/06/2015 |
0239 298 | Magrathea Telecommunications Limited | 24/09/2004 |
0239 299 | GCI Network Solutions Ltd | 19/04/2017 |
0239 300 | TTNC Limited | 14/11/2013 |
0239 301 | Plus Telecom Limited | 09/02/2006 |
0239 302 | Barritel Limited | 13/02/2006 |
0239 303 | Vodafone Ltd (C&W) | 20/06/2013 |
0239 304 | TelNG Limited | 01/03/2007 |
0239 305 | Orange Business Holdings UK Limited | 26/02/2013 |
0239 306 | Digital Space Group Limited | 12/04/2016 |
0239 307 | TalkTalk Communications Limited | 05/10/2007 |
0239 308 | TalkTalk Communications Limited | 12/02/2013 |
0239 309 | Kalnet4U Ltd | 13/05/2013 |
0239 310 | Vonage Limited | 28/01/2015 |
0239 311 | Sky UK Limited | 24/06/2013 |
0239 312 | iHub 2 Limited | 18/05/2016 |
0239 313 | Localphone Limited | 22/05/2007 |
0239 314 | (AQ) LIMITED | 28/09/2012 |
0239 315 | Invade International Ltd | 12/01/2016 |
0239 316 | AQL Wholesale Ltd | 02/01/2008 |
0239 317 | Telecom2 Limited | 10/09/2009 |
0239 318 | Digital Space Group Limited | 09/06/2008 |
0239 319 | Inet Telecoms Ltd (Voipfone) | 18/09/2008 |
0239 320 | VoIP-Un Limited | 08/11/2007 |
0239 321 | Solutios Limited | 27/11/2008 |
0239 323 | Voiceflex Limited | 30/07/2007 |
0239 324 | GCI Network Solutions Ltd | 25/04/2017 |
0239 326 | Gamma Telecom Holdings Ltd | 11/03/2021 |
0239 327 | Spitfire Network Services Limited | 28/11/2006 |
0239 328 | IPV6 Limited | 23/01/2009 |
0239 329 | Nexus Telecommunications Limited | 07/10/2009 |
0239 330 | Resilient PLC | 01/12/2006 |
0239 331 | Entanet International Ltd | 20/12/2007 |
0239 332 | Nextec UK Limited | 25/11/2013 |
0239 333 | Commi Holdings Limited | 21/11/2016 |
0239 335 | Telecoms World PLC | 02/07/2009 |
0239 336 | Vectone Mobile Limited | 07/07/2009 |
0239 337 | Business Broadcast Communications Limited | 16/10/2009 |
0239 338 | 8x8 UK Limited | 19/02/2010 |
0239 339 | Net-Work Internet Ltd | 21/09/2007 |
0239 340 | Optify Mediaforce Limited | 20/02/2009 |
0239 342 | WIGHTFIBRE LIMITED | 09/11/2009 |
0239 343 | Buzz Networks Limited | 01/03/2010 |
0239 344 | Mars Communications Limited | 05/02/2009 |
0239 345 | Lanonyx Telecom Limited | 03/03/2015 |
0239 346 | Atomstream Limited | 15/04/2010 |
0239 347 | Liquid 11 Limited | 26/04/2010 |
0239 348 | TeleSurf Limited | 21/06/2010 |
0239 349 | Red Matter Limited | 03/06/2010 |
0239 350 | Andrews & Arnold (Numbers) Ltd | 15/04/2009 |
0239 351 | I-NET COMMUNICATIONS GROUP PLC | 14/01/2010 |
0239 352 | Calltracks Limited | 20/09/2013 |
0239 354 | Windsor Telecom Ltd | 29/07/2010 |
0239 355 | Simwood eSMS Limited | 03/08/2010 |
0239 356 | Sark Telecom B.V. | 11/08/2010 |
0239 357 | Telephone Box Limited | 08/11/2010 |
0239 358 | Invosys Limited | 17/05/2012 |
0239 359 | VoiceHost Limited | 06/10/2010 |
0239 360 | Numbergroup Utilities Ltd | 02/11/2010 |
0239 361 | Firstsound Ltd | 11/04/2011 |
0239 362 | Numbers Plus Ltd | 28/07/2011 |
0239 363 | Suretec Systems Ltd | 14/05/2010 |
0239 365 | Aloha Telecommunications Ltd | 16/08/2011 |
0239 366 | Nodemax Limited | 22/09/2009 |
0239 368 | Phone Co-Op Numbering Limited | 07/12/2010 |
0239 370 | Internexus Networks Limited | 22/11/2011 |
0239 373 | Hello Telecom (UK) Limited | 20/07/2009 |
0239 374 | Nexbridge Communications Limited | 09/01/2012 |
0239 376 | API Telecom Limited | 19/04/2012 |
0239 377 | Relax Telecom Limited | 15/08/2014 |
0239 378 | Sky UK Limited | 24/06/2013 |
0239 379 | Numbergroup Utilities Ltd | 12/04/2019 |
0239 380 | IP Wholesale Limited | 01/06/2017 |
0239 381 | Ziron Limited | 20/08/2012 |
0239 382 | Content Guru Limited | 11/10/2012 |
0239 383 | TelXL Ltd | 12/02/2008 |
0239 385 | Media Hawk Ltd | 10/04/2013 |
0239 386 | XoverX Ltd | 29/04/2013 |
0239 387 | Gamma Telecom Holdings Ltd | 23/04/2013 |
0239 388 | Voxbone SA | 29/01/2008 |
0239 389 | Citrus Telecommunications Ltd | 28/02/2012 |
0239 390 | Served Up Limited | 08/10/2008 |
0239 391 | Cloudcall Limited | 11/11/2011 |
0239 393 | Digital Mail Limited | 02/02/2007 |
0239 394 | CFL Communications Ltd | 11/08/2008 |
0239 395 | Minotaur Telecom Limited | 31/01/2013 |
0239 396 | Invoco Ltd | 25/05/2012 |
0239 397 | Digital Space Group Limited | 15/03/2016 |
0239 399 | Nationwide Telephone Assistance Ltd | 15/10/2007 |
0239 400 | BT | 14/11/2013 |
0239 401 | Redwood Technologies Ltd | 15/11/2018 |
0239 402 | Metronet (UK) Limited | 21/05/2019 |
0239 403 | Alnitak GmbH | 07/12/2015 |
0239 406 | IOVOX Limited | 27/03/2014 |
0239 407 | Resilient PLC | 14/05/2014 |
0239 408 | Belgacom International Carrier Services SA | 20/06/2016 |
0239 409 | NFON UK Ltd | 29/04/2016 |
0239 412 | Tango Networks UK Ltd | 29/04/2016 |
0239 413 | Hyperoptic Ltd | 31/08/2016 |
0239 414 | Number Services Ltd. | 22/11/2018 |
0239 415 | Global Reach Networks Limited | 24/08/2016 |
0239 416 | I.T Communications Limited | 21/03/2016 |
0239 417 | Sky UK Limited | 03/10/2016 |
0239 418 | Adepteo Limited | 19/10/2016 |
0239 419 | Dial 9 Communications Limited | 23/05/2016 |
0239 420 | DIDWW Ireland Limited | 16/11/2016 |
0239 421 | Gamma Telecom Holdings Ltd | 02/05/2017 |
0239 422 | IP Voice Networks Ltd | 22/08/2017 |
0239 423 | Zapappi Ltd | 19/10/2017 |
0239 424 | IOVOX Limited | 12/12/2016 |
0239 425 | Fuse 2 Communications Ltd | 03/07/2017 |
0239 426 | Telappliant Ltd | 05/04/2018 |
0239 427 | Infinity Tracking Ltd | 20/11/2018 |
0239 428 | TelXL Ltd | 09/01/2020 |
0239 429 | 24 SEVEN CLOUD COMMUNICATIONS LTD | 21/01/2020 |
0239 430 | ICUK Computing Services Limited | 12/08/2019 |
0239 431 | Gamma Telecom Holdings Ltd | 21/01/2020 |
0239 432 | SiPalto Ltd | 05/11/2019 |
0239 434 | TELNYX UK LIMITED | 07/05/2020 |
0239 435 | BT | 12/01/2021 |
0239 437 | Club Communications Ltd | 27/01/2020 |
0239 438 | Colt Technology Services | 27/05/2020 |
0239 439 | Mi Telecom Limited | 03/07/2020 |