This page contains information about which telephone companies the various 03703 numbers are allocated to.
| First Digits | Status | Communications Provider | Change |
|---|---|---|---|
| 0370 300 | Allocated | Vodafone Ltd (Thus) | 06/2007 |
| 0370 301 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 302 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 303 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 304 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 305 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 306 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 307 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 308 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 309 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 310 | Allocated | Alphatalk Ltd | 04/2011 |
| 0370 311 | Protected | - | - |
| 0370 312 | Allocated | FleXtel Limited | 04/2007 |
| 0370 313 | Protected | - | - |
| 0370 314 | Allocated | FleXtel Limited | 04/2007 |
| 0370 315 | Allocated | FleXtel Limited | 04/2007 |
| 0370 316 | Allocated | FleXtel Limited | 04/2007 |
| 0370 317 | Protected | - | - |
| 0370 318 | Protected | - | - |
| 0370 319 | Allocated | Dantec Enterprises Ltd | 09/2008 |
| 0370 320 | Allocated | Virgin Media Wholesale Limited | 10/2009 |
| 0370 321 | Allocated | FleXtel Limited | 04/2007 |
| 0370 322 | Protected | - | - |
| 0370 323 | Allocated | Virgin Media Wholesale Limited | 10/2009 |
| 0370 324 | Allocated | COLT Technology Services | 04/2007 |
| 0370 325 | Allocated | Virgin Media Wholesale Limited | 10/2009 |
| 0370 326 | Allocated | Yim Siam Telecom | 01/2012 |
| 0370 327 | Protected | - | - |
| 0370 328 | Protected | - | - |
| 0370 329 | Protected | - | - |
| 0370 330 | Allocated | Vodafone Ltd (Thus) | 06/2007 |
| 0370 331 | Allocated | Invomo Ltd | 10/2007 |
| 0370 332 | Protected | - | - |
| 0370 333 | Allocated | Vodafone Ltd (C&W) | 03/2011 |
| 0370 334 | Allocated | Citrus Telecommunications Ltd | 07/2007 |
| 0370 335 | Allocated | IV Response Limited | 05/2007 |
| 0370 336 | Allocated | BT | 04/2007 |
| 0370 337 | Protected | - | - |
| 0370 338 | Protected | - | - |
| 0370 339 | Protected | - | - |
| 0370 340 | Protected | - | - |
| 0370 341 | Protected | - | - |
| 0370 342 | Protected | - | - |
| 0370 343 | Protected | - | - |
| 0370 344 | Allocated | Affiniti Integrated Solutions Ltd | 05/2007 |
| 0370 345 | Allocated | 4D Interactive Ltd | 06/2007 |
| 0370 346 | Protected | - | - |
| 0370 347 | Protected | - | - |
| 0370 348 | Protected | - | - |
| 0370 349 | Protected | - | - |
| 0370 350 | Allocated | Windsor Telecom Plc | 09/2007 |
| 0370 351 | Allocated | COLT Technology Services | 04/2007 |
| 0370 352 | Allocated | COLT Technology Services | 04/2007 |
| 0370 353 | Allocated | COLT Technology Services | 04/2007 |
| 0370 354 | Protected | - | - |
| 0370 355 | Allocated | Eclipse Tel Limited | 11/2009 |
| 0370 356 | Protected | - | - |
| 0370 357 | Allocated | Virgin Media Limited | 07/2008 |
| 0370 358 | Protected | - | - |
| 0370 359 | Allocated | Oxygen8 Communications UK Limited | 01/2008 |
| 0370 360 | Allocated | Vodafone Ltd (C&W) | 05/2012 |
| 0370 361 | Allocated | Vodafone Ltd (Thus) | 01/2012 |
| 0370 362 | Protected | - | - |
| 0370 363 | Protected | - | - |
| 0370 364 | Protected | - | - |
| 0370 365 | Allocated | TalkTalk Communications Limited | 07/2008 |
| 0370 366 | Allocated | Vodafone Ltd (C&W) | 03/2010 |
| 0370 367 | Protected | - | - |
| 0370 368 | Allocated | TTNC Limited | 04/2007 |
| 0370 369 | Allocated | TTNC Limited | 04/2007 |
| 0370 370 | Protected | - | - |
| 0370 371 | Allocated | Invomo Ltd | 10/2007 |
| 0370 372 | Allocated | Verizon UK Ltd | 04/2007 |
| 0370 373 | Allocated | Verizon UK Ltd | 04/2007 |
| 0370 374 | Allocated | Verizon UK Ltd | 04/2007 |
| 0370 375 | Allocated | Verizon UK Ltd | 04/2007 |
| 0370 376 | Allocated | Verizon UK Ltd | 04/2007 |
| 0370 377 | Protected | - | - |
| 0370 378 | Protected | - | - |
| 0370 379 | Protected | - | - |
| 0370 380 | Allocated | Vodafone Ltd (Energis) | 04/2007 |
| 0370 381 | Allocated | Vodafone Ltd (Energis) | 04/2007 |
| 0370 382 | Allocated | Vodafone Ltd (Energis) | 04/2007 |
| 0370 383 | Allocated | Vodafone Ltd (C&W) | 04/2007 |
| 0370 384 | Protected | - | - |
| 0370 385 | Allocated | Vodafone Ltd (C&W) | 04/2007 |
| 0370 386 | Allocated | Vodafone Ltd (Energis) | 04/2007 |
| 0370 387 | Allocated | Barritel Limited | 04/2007 |
| 0370 388 | Protected | - | - |
| 0370 389 | Allocated | TalkTalk Communications Limited | 07/2008 |
| 0370 390 | Allocated | Virgin Media Limited | 07/2008 |
| 0370 391 | Allocated | Tesla Dynamic Ltd | 07/2011 |
| 0370 392 | Allocated | Magrathea Telecommunications Limited | 02/2012 |
| 0370 393 | Allocated | Virgin Media Limited | 07/2008 |
| 0370 394 | Protected | - | - |
| 0370 395 | Protected | - | - |
| 0370 396 | Allocated | Virgin Media Limited | 07/2008 |
| 0370 397 | Allocated | Magrathea Telecommunications Limited | 02/2014 |
| 0370 398 | Allocated | Virgin Media Limited | 07/2008 |
| 0370 399 | Allocated | Virgin Media Limited | 07/2008 |