Code allocations for the 01423 STD code

Summary

  • Status
    • Allocated: 202
    • Free: 11
    • Free for National Dialling Only: 29
    • Protected: 263
  • Operators : 104
  • Latest change : December 2008
Click here for Status definitions
Have you received a call from a number beginning 01423? Get information on a full number beginning 01423, using our full UK number search.
Find out about the location and calling costs for 01423 numbers on our 01423 code page.

This page contains information about which telephone companies the various 01423 numbers are allocated to.

First Digits Status Communications Provider Number Length Notes Change
01423 00 Free for National Dialling Only - (0)+10 - -
01423 01 Free for National Dialling Only - (0)+10 - -
01423 02 Free for National Dialling Only - (0)+10 - -
01423 03 Free for National Dialling Only - (0)+10 - -
01423 04 Free for National Dialling Only - (0)+10 - -
01423 05 Free for National Dialling Only - (0)+10 - -
01423 06 Free for National Dialling Only - (0)+10 - -
01423 07 Free for National Dialling Only - (0)+10 - -
01423 08 Free for National Dialling Only - (0)+10 - -
01423 09 Free for National Dialling Only - (0)+10 - -
01423 100 Free for National Dialling Only - (0)+10 - -
01423 101 Free for National Dialling Only - (0)+10 - -
01423 102 Free for National Dialling Only - (0)+10 - -
01423 103 Free for National Dialling Only - (0)+10 - -
01423 104 Free for National Dialling Only - (0)+10 - -
01423 105 Free for National Dialling Only - (0)+10 - -
01423 106 Free for National Dialling Only - (0)+10 - -
01423 107 Free for National Dialling Only - (0)+10 - -
01423 108 Free for National Dialling Only - (0)+10 - -
01423 109 Free for National Dialling Only - (0)+10 - -
01423 11 Free for National Dialling Only - (0)+10 - -
01423 12 Free for National Dialling Only - (0)+10 - -
01423 13 Free for National Dialling Only - (0)+10 - -
01423 14 Free for National Dialling Only - (0)+10 - -
01423 15 Free for National Dialling Only - (0)+10 - -
01423 16 Free for National Dialling Only - (0)+10 - -
01423 17 Free for National Dialling Only - (0)+10 - -
01423 18 Free for National Dialling Only - (0)+10 - -
01423 19 Free for National Dialling Only - (0)+10 - -
01423 200 Allocated Nationwide Telephone Assistance Ltd 4+6 - 01/10/2007
01423 201 Allocated (aq) Limited trading as aql 4+6 - 02/10/2007
01423 202 Allocated TalkTalk Communications Limited 4+6 - 08/10/2007
01423 203 Allocated TalkTalk Communications Limited 4+6 - 25/07/2008
01423 204 Allocated 3C Limited 4+6 - 11/09/2008
01423 205 Allocated Voxbone SA 4+6 - 18/09/2008
01423 206 Allocated iNet Telecoms Ltd (Voipfone) 4+6 - 24/09/2008
01423 207 Allocated Served Up Limited. 4+6 - 06/10/2008
01423 208 Allocated Invomo Ltd 4+6 - 04/12/2009
01423 209 Allocated Buzz Networks Limited 4+6 - 24/02/2010
01423 21 Allocated Edge Telecom Limited 4+6 F-Digit '0' 22/02/2005
01423 220 Protected - 4+6 - -
01423 221 Protected - 4+6 - -
01423 222 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 223 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 224 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 225 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 226 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 227 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 228 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 229 Allocated Gamma Telecom Holdings Ltd 4+6 - 05/04/2004
01423 23 Allocated Starcomm Ltd 4+6 - 30/01/2001
01423 240 Allocated Linear Telecoms Limited 4+6 - 08/10/2010
01423 241 Allocated Nexbridge Communications Limited 4+6 - 16/03/2011
01423 242 Allocated Barritel Limited 4+6 - 03/08/2011
01423 243 Allocated Barritec Limited 4+6 - 20/09/2011
01423 244 Allocated Orbtalk Limited 4+6 - 15/09/2011
01423 245 Allocated Hello Telecom (UK) PLC 4+6 - 10/11/2011
01423 246 Allocated Internexus Networks Limited 4+6 - 21/11/2011
01423 247 Allocated Broadcast Telecom Ltd 4+6 - 21/02/2012
01423 248 Allocated Bicom Systems EURL 4+6 - 02/03/2012
01423 249 Allocated API Telecom Limited 4+6 - 29/03/2012
01423 250 Allocated TG Support Limited 4+6 - 07/07/2006
01423 251 Protected - 4+6 - -
01423 252 Allocated Digitech Solutions Global Limited 4+6 - 28/12/2005
01423 253 Allocated Six Degrees Unified Comms Limited 4+6 - 06/10/2005
01423 254 Allocated Net Solutions Europe Limited 4+6 - 01/12/2005
01423 255 Allocated Easynet Enterprise Services Limited 4+6 - 22/09/2005
01423 256 Allocated Digital Mail Limited 4+6 - 13/01/2006
01423 257 Allocated FleXtel Limited 4+6 - 16/11/2005
01423 258 Allocated Virgin Media Limited 4+6 - 24/01/2006
01423 259 Allocated Inclarity Communications Ltd 4+6 - 05/05/2006
01423 260 Protected - 4+6 - -
01423 261 Protected - 4+6 - -
01423 262 Protected - 4+6 - -
01423 263 Protected - 4+6 - -
01423 264 Protected - 4+6 - -
01423 265 Protected - 4+6 - -
01423 266 Protected - 4+6 - -
01423 267 Protected - 4+6 - -
01423 268 Protected - 4+6 - -
01423 269 Protected - 4+6 - -
01423 270 Allocated Coms.Com Ltd 4+6 - 07/06/2006
01423 271 Allocated Resilient Networks Plc 4+6 - 20/12/2006
01423 272 Allocated TelNG Limited 4+6 - 27/02/2007
01423 273 Allocated Teledesign Ltd 4+6 - 19/09/2006
01423 274 Allocated Localphone Limited 4+6 - 04/05/2007
01423 275 Allocated TTNC Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9' 07/09/2006
01423 276 Allocated Frontier Systems Ltd 4+6 - 30/07/2007
01423 277 Allocated Spitfire Network Services Ltd 4+6 - 23/08/2006
01423 278 Allocated i-Net Communications Group Plc 4+6 - 21/06/2013
01423 279 Allocated 24 Seven Communications Ltd 4+6 - 17/03/2008
01423 280 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 281 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 282 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 283 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 284 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 285 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 286 Allocated Vodafone Ltd (C&W) 4+6 - 18/02/2010
01423 287 Protected - 4+6 - -
01423 288 Protected - 4+6 - -
01423 289 Protected - 4+6 - -
01423 290 Allocated VoIP-Un Limited 4+6 - 29/10/2007
01423 291 Allocated Premium O Limited 4+6 - 08/01/2008
01423 292 Allocated Telecom2 Ltd 4+6 - 11/09/2009
01423 293 Allocated E164 Ltd 4+6 - 01/03/2010
01423 294 Allocated Digitech Solutions Global Limited 4+6 - 24/03/2010
01423 295 Allocated Suretec Systems Ltd 4+6 - 06/05/2010
01423 296 Allocated Calltracks Limited 4+6 - 09/07/2010
01423 297 Allocated VoiceHost Limited 4+6 - 27/09/2010
01423 298 Allocated Windsor Telecom Plc 4+6 - 21/07/2010
01423 299 Allocated Telappliant Ltd 4+6 - 02/06/2010
01423 30 Allocated Vodafone Ltd (Energis) 4+6 - 26/05/2006
01423 310 Allocated Localphone Limited 4+6 - 04/05/2007
01423 311 Allocated Starcomm Ltd 4+6 - 24/05/2007
01423 312 Allocated TelNG Limited 4+6 - 27/02/2007
01423 313 Allocated TalkTalk Communications Limited 4+6 - 07/08/2007
01423 314 Allocated Frontier Systems Ltd 4+6 - 27/09/2007
01423 315 Allocated Teledesign Ltd 4+6 - 29/08/2007
01423 316 Allocated VoIP-Un Limited 4+6 - 08/11/2007
01423 317 Allocated Net-Work Internet Ltd 4+6 - 24/09/2007
01423 318 Allocated Timico Limited 4+6 - 30/11/2007
01423 319 Allocated Nationwide Telephone Assistance Ltd 4+6 - 01/10/2007
01423 32 Allocated BT 4+6 - 15/07/1994
01423 33 Allocated BT 4+6 - 15/07/1994
01423 34 Allocated BT 4+6 - 15/07/1994
01423 35 Allocated BT 4+6 - 15/07/1994
01423 36 Allocated BT 4+6 - 15/07/1994
01423 37 Allocated BT 4+6 - 04/05/1995
01423 380 Protected - 4+6 - -
01423 381 Protected - 4+6 - -
01423 382 Protected - 4+6 - -
01423 383 Protected - 4+6 - -
01423 384 Protected - 4+6 - -
01423 385 Protected - 4+6 - -
01423 386 Protected - 4+6 - -
01423 387 Protected - 4+6 - -
01423 388 Allocated Vodafone Ltd (YC) 4+6 - 09/09/2014
01423 389 Allocated Vodafone Ltd (YC) 4+6 - 09/09/2014
01423 390 Allocated Nodemax Limited 4+6 - 08/07/2008
01423 391 Allocated TalkTalk Communications Limited 4+6 - 28/07/2008
01423 392 Allocated 3C Limited 4+6 - 11/09/2008
01423 393 Allocated Voxbone SA 4+6 - 18/09/2008
01423 394 Allocated Served Up Limited. 4+6 - 06/10/2008
01423 395 Allocated Solutios Limited 4+6 - 07/10/2008
01423 396 Allocated Gamma Telecom Holdings Ltd 4+6 - 09/10/2008
01423 397 Allocated Barritel Limited 4+6 - 11/11/2008
01423 398 Allocated British Sky Broadcasting Limited 4+6 - 31/12/2008
01423 399 Allocated IPV6 Limited 4+6 - 04/02/2009
01423 400 Allocated X-Pilot Limited 4+6 - 19/09/2005
01423 401 Allocated Syntec Limited 4+6 - 18/11/2005
01423 402 Protected - 4+6 - -
01423 403 Allocated Inclarity Communications Ltd 4+6 - 03/05/2006
01423 404 Allocated Easynet Enterprise Services Limited 4+6 - 22/09/2005
01423 405 Allocated Coms.Com Ltd 4+6 - 30/05/2006
01423 406 Allocated Net Solutions Europe Limited 4+6 - 31/05/2006
01423 407 Allocated TTNC Limited 4+6 F-Digit '0,1,2,3,4,5,6,7,8,9' 30/08/2006
01423 408 Allocated TalkTalk Communications Limited 4+6 - 09/06/2014
01423 409 Allocated Spitfire Network Services Ltd 4+6 - 28/11/2006
01423 410 Allocated Andrews & Arnold (Numbers) Ltd 4+6 - 06/03/2009
01423 411 Allocated Gamma Telecom Holdings Ltd 4+6 - 23/04/2009
01423 412 Allocated Telecoms World Plc 4+6 - 13/03/2009
01423 413 Allocated Danemere Street Creative 4+6 - 20/07/2009
01423 414 Allocated Known Communications Limited 4+6 - 17/09/2009
01423 415 Allocated Atomstream Limited 4+6 - 22/03/2010
01423 416 Allocated Suretec Systems Ltd 4+6 - 06/05/2010
01423 417 Allocated Calltracks Limited 4+6 - 08/07/2010
01423 418 Allocated Numbergroup Network Ltd 4+6 - 04/11/2010
01423 419 Allocated Cheers International Sales Limited 4+6 - 14/12/2010
01423 420 Allocated We Love Communications Limited 4+6 - 08/08/2012
01423 421 Allocated British Sky Broadcasting Limited 4+6 - 30/07/2014
01423 422 Allocated Content Guru Ltd 4+6 - 15/10/2012
01423 423 Allocated Simwood eSMS Limited 4+6 - 05/04/2013
01423 424 Allocated Minotaur Telecom Limited 4+6 - 18/12/2012
01423 425 Free - 4+6 - -
01423 426 Free - 4+6 - -
01423 427 Allocated IOVOX Limited 4+6 - 27/03/2014
01423 428 Free - 4+6 - -
01423 429 Allocated Radius Communications Limited 4+6 - 07/01/2014
01423 430 Allocated Nexbridge Communications Limited 4+6 - 16/03/2011
01423 431 Allocated British Sky Broadcasting Limited 4+6 - 15/04/2011
01423 432 Protected - 4+6 - -
01423 433 Allocated Internexus Networks Limited 4+6 - 21/11/2011
01423 434 Allocated Invoco Ltd 4+6 - 22/09/2011
01423 435 Allocated Bicom Systems EURL 4+6 - 02/03/2012
01423 436 Allocated Barritec Limited 4+6 - 20/09/2011
01423 437 Allocated API Telecom Limited 4+6 - 29/03/2012
01423 438 Allocated Ziron (UK) Ltd 4+6 - 30/07/2012
01423 439 Allocated British Sky Broadcasting Limited 4+6 - 03/08/2012
01423 440 Protected - 4+6 - -
01423 441 Protected - 4+6 - -
01423 442 Protected - 4+6 - -
01423 443 Protected - 4+6 - -
01423 444 Protected - 4+6 - -
01423 445 Protected - 4+6 - -
01423 446 Protected - 4+6 - -
01423 447 Protected - 4+6 - -
01423 448 Protected - 4+6 - -
01423 449 Protected - 4+6 - -
01423 450 Protected - 4+6 - -
01423 451 Protected - 4+6 - -
01423 452 Protected - 4+6 - -
01423 453 Protected - 4+6 - -
01423 454 Protected - 4+6 - -
01423 455 Protected - 4+6 - -
01423 456 Protected - 4+6 - -
01423 457 Protected - 4+6 - -
01423 458 Protected - 4+6 - -
01423 459 Protected - 4+6 - -
01423 460 Protected - 4+6 - -
01423 461 Protected - 4+6 - -
01423 462 Protected - 4+6 - -
01423 463 Protected - 4+6 - -
01423 464 Protected - 4+6 - -
01423 465 Protected - 4+6 - -
01423 466 Protected - 4+6 - -
01423 467 Protected - 4+6 - -
01423 468 Protected - 4+6 - -
01423 469 Protected - 4+6 - -
01423 470 Protected - 4+6 - -
01423 471 Protected - 4+6 - -
01423 472 Protected - 4+6 - -
01423 473 Protected - 4+6 - -
01423 474 Protected - 4+6 - -
01423 475 Protected - 4+6 - -
01423 476 Protected - 4+6 - -
01423 477 Protected - 4+6 - -
01423 478 Protected - 4+6 - -
01423 479 Protected - 4+6 - -
01423 480 Protected - 4+6 - -
01423 481 Protected - 4+6 - -
01423 482 Protected - 4+6 - -
01423 483 Protected - 4+6 - -
01423 484 Protected - 4+6 - -
01423 485 Protected - 4+6 - -
01423 486 Protected - 4+6 - -
01423 487 Protected - 4+6 - -
01423 488 Protected - 4+6 - -
01423 489 Protected - 4+6 - -
01423 490 Protected - 4+6 - -
01423 491 Protected - 4+6 - -
01423 492 Protected - 4+6 - -
01423 493 Protected - 4+6 - -
01423 494 Protected - 4+6 - -
01423 495 Protected - 4+6 - -
01423 496 Protected - 4+6 - -
01423 497 Protected - 4+6 - -
01423 498 Protected - 4+6 - -
01423 499 Protected - 4+6 - -
01423 50 Allocated BT 4+6 - 15/07/1994
01423 51 Allocated InTechnology Plc 4+6 F-Digit '0,2,3,4,9' 07/06/2007
01423 52 Allocated BT 4+6 - 15/07/1994
01423 53 Allocated BT 4+6 - 15/07/1994
01423 54 Allocated Virgin Media Limited 4+6 - 16/05/1995
01423 55 Allocated Virgin Media Limited 4+6 - 11/04/1997
01423 56 Allocated BT 4+6 - 15/07/1994
01423 570 Allocated Telephone Box Limited 4+6 - 25/11/2010
01423 571 Allocated Phone Co-Op Numbering Limited 4+6 - 22/12/2010
01423 572 Allocated Invosys Limited 4+6 - 18/01/2011
01423 573 Allocated Globecom International Limited 4+6 - 24/12/2010
01423 574 Allocated IP Base Ltd 4+6 - 21/01/2011
01423 575 Allocated ICC Networks Ltd 4+6 - 13/04/2012
01423 576 Allocated TalkTalk Communications Limited 4+6 - 20/04/2012
01423 577 Allocated We Love Communications Limited 4+6 - 08/08/2012
01423 578 Allocated IOVOX Limited 4+6 - 03/07/2012
01423 579 Allocated British Sky Broadcasting Limited 4+6 - 15/11/2012
01423 580 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 581 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 582 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 583 Protected - 4+6 - -
01423 584 Protected - 4+6 - -
01423 585 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 586 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 587 Protected - 4+6 - -
01423 588 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 589 Allocated Affiniti Integrated Solutions Ltd 4+6 - 15/07/1994
01423 590 Allocated Magrathea Telecommunications Limited 4+6 - 17/11/2011
01423 591 Protected - 4+6 - -
01423 592 Protected - 4+6 - -
01423 593 Allocated Magrathea Telecommunications Limited 4+6 - 17/11/2011
01423 594 Allocated Magrathea Telecommunications Limited 4+6 - 17/11/2011
01423 595 Allocated Magrathea Telecommunications Limited 4+6 - 17/11/2011
01423 596 Protected - 4+6 - -
01423 597 Protected - 4+6 - -
01423 598 Allocated Magrathea Telecommunications Limited 4+6 - 17/11/2011
01423 599 Allocated Magrathea Telecommunications Limited 4+6 - 17/11/2011
01423 600 Allocated Minotaur Telecom Limited 4+6 - 18/12/2012
01423 601 Allocated Simwood eSMS Limited 4+6 - 05/04/2013
01423 602 Allocated Media Hawk Ltd 4+6 - 11/04/2013
01423 603 Allocated Kalnet4u Ltd 4+6 - 16/05/2013
01423 604 Allocated Magnetic North Software Limited 4+6 - 19/02/2013
01423 605 Allocated iHub UK Ltd 4+6 - 14/08/2013
01423 606 Allocated Numbers Plus Ltd 4+6 - 14/02/2013
01423 607 Allocated IOVOX Limited 4+6 - 22/08/2013
01423 608 Allocated BT 4+6 - 24/10/2013
01423 609 Allocated Liquid 11 Limited 4+6 - 13/06/2013
01423 610 Allocated British Sky Broadcasting Limited 4+6 - 30/07/2014
01423 611 Allocated York Data Services Ltd 4+6 - 13/08/2014
01423 612 Free - 4+6 - -
01423 613 Free - 4+6 - -
01423 614 Free - 4+6 - -
01423 615 Free - 4+6 - -
01423 616 Free - 4+6 - -
01423 617 Free - 4+6 - -
01423 618 Free - 4+6 - -
01423 619 Free - 4+6 - -
01423 620 Allocated Mars Communications Limited 4+6 - 03/02/2009
01423 621 Allocated Keycom plc 4+6 - 13/05/2009
01423 622 Allocated Solutios Limited 4+6 - 07/10/2008
01423 623 Allocated TeleWare PLC 4+6 - 12/12/2012
01423 624 Allocated PTGI International Carrier Services Ltd 4+6 - 18/06/2009
01423 625 Allocated Nexus Telecommunications Limited 4+6 - 25/09/2009
01423 626 Allocated Verizon UK Ltd 4+6 - 09/11/2009
01423 627 Allocated Atomstream Limited 4+6 - 22/03/2010
01423 628 Allocated CFL Communications Limited 4+6 - 10/07/2009
01423 629 Allocated Mundio Mobile Limited 4+6 - 29/06/2009
01423 630 Protected - 4+6 - -
01423 631 Protected - 4+6 - -
01423 632 Protected - 4+6 - -
01423 633 Protected - 4+6 - -
01423 634 Protected - 4+6 - -
01423 635 Protected - 4+6 - -
01423 636 Protected - 4+6 - -
01423 637 Protected - 4+6 - -
01423 638 Protected - 4+6 - -
01423 639 Protected - 4+6 - -
01423 640 Protected - 4+6 - -
01423 641 Protected - 4+6 - -
01423 642 Protected - 4+6 - -
01423 643 Protected - 4+6 - -
01423 644 Protected - 4+6 - -
01423 645 Protected - 4+6 - -
01423 646 Protected - 4+6 - -
01423 647 Protected - 4+6 - -
01423 648 Protected - 4+6 - -
01423 649 Protected - 4+6 - -
01423 650 Protected - 4+6 - -
01423 651 Protected - 4+6 - -
01423 652 Protected - 4+6 - -
01423 653 Protected - 4+6 - -
01423 654 Protected - 4+6 - -
01423 655 Protected - 4+6 - -
01423 656 Protected - 4+6 - -
01423 657 Protected - 4+6 - -
01423 658 Protected - 4+6 - -
01423 659 Protected - 4+6 - -
01423 660 Protected - 4+6 - -
01423 661 Protected - 4+6 - -
01423 662 Protected - 4+6 - -
01423 663 Protected - 4+6 - -
01423 664 Protected - 4+6 - -
01423 665 Protected - 4+6 - -
01423 666 Protected - 4+6 - -
01423 667 Protected - 4+6 - -
01423 668 Protected - 4+6 - -
01423 669 Protected - 4+6 - -
01423 670 Protected - 4+6 - -
01423 671 Protected - 4+6 - -
01423 672 Protected - 4+6 - -
01423 673 Protected - 4+6 - -
01423 674 Protected - 4+6 - -
01423 675 Protected - 4+6 - -
01423 676 Protected - 4+6 - -
01423 677 Protected - 4+6 - -
01423 678 Protected - 4+6 - -
01423 679 Protected - 4+6 - -
01423 680 Protected - 4+6 - -
01423 681 Protected - 4+6 - -
01423 682 Protected - 4+6 - -
01423 683 Protected - 4+6 - -
01423 684 Protected - 4+6 - -
01423 685 Protected - 4+6 - -
01423 686 Protected - 4+6 - -
01423 687 Protected - 4+6 - -
01423 688 Protected - 4+6 - -
01423 689 Protected - 4+6 - -
01423 690 Protected - 4+6 - -
01423 691 Protected - 4+6 - -
01423 692 Protected - 4+6 - -
01423 693 Protected - 4+6 - -
01423 694 Protected - 4+6 - -
01423 695 Protected - 4+6 - -
01423 696 Protected - 4+6 - -
01423 697 Protected - 4+6 - -
01423 698 Protected - 4+6 - -
01423 699 Protected - 4+6 - -
01423 70 Allocated BT 4+6 - 15/07/1994
01423 71 Allocated BT 4+6 - 15/07/1994
01423 72 Allocated BT 4+6 - 15/07/1994
01423 73 Allocated BT 4+6 - 15/07/1994
01423 74 Allocated Telephony Services Limited 4+6 - 01/11/2004
01423 75 Allocated BT 4+6 - 15/07/1994
01423 76 Allocated Danemere Street Creative 4+6 - 01/11/2004
01423 77 Allocated BT 4+6 - 15/07/1994
01423 78 Allocated BT 4+6 - 15/07/1994
01423 79 Allocated BT 4+6 - 15/07/1994
01423 800 Protected - 4+6 - -
01423 801 Protected - 4+6 - -
01423 802 Protected - 4+6 - -
01423 803 Protected - 4+6 - -
01423 804 Protected - 4+6 - -
01423 805 Protected - 4+6 - -
01423 806 Protected - 4+6 - -
01423 807 Protected - 4+6 - -
01423 808 Protected - 4+6 - -
01423 809 Protected - 4+6 - -
01423 81 Allocated BT 4+6 - 15/07/1994
01423 820 Protected - 4+6 - -
01423 821 Protected - 4+6 - -
01423 822 Protected - 4+6 - -
01423 823 Protected - 4+6 - -
01423 824 Protected - 4+6 - -
01423 825 Protected - 4+6 - -
01423 826 Protected - 4+6 - -
01423 827 Protected - 4+6 - -
01423 828 Protected - 4+6 - -
01423 829 Allocated Vodafone Ltd (Thus) 4+6 - 05/10/1999
01423 83 Allocated BT 4+6 - 15/07/1994
01423 84 Allocated Vodafone Ltd (C&W) 4+6 - 11/02/2010
01423 85 Allocated BT 4+6 - 15/07/1994
01423 86 Allocated BT 4+6 - 15/07/1994
01423 87 Allocated BT 4+6 - 15/07/1994
01423 88 Allocated BT 4+6 - 15/07/1994
01423 89 Allocated Vodafone Ltd (C&W) 4+6 - 11/02/2010
01423 90 Allocated Magrathea Telecommunications Limited 4+6 - 19/11/2004
01423 910 Protected - 4+6 - -
01423 911 Protected - 4+6 - -
01423 912 Protected - 4+6 - -
01423 913 Protected - 4+6 - -
01423 914 Protected - 4+6 - -
01423 915 Protected - 4+6 - -
01423 916 Protected - 4+6 - -
01423 917 Protected - 4+6 - -
01423 918 Protected - 4+6 - -
01423 919 Protected - 4+6 - -
01423 920 Protected - 4+6 - -
01423 921 Protected - 4+6 - -
01423 922 Protected - 4+6 - -
01423 923 Protected - 4+6 - -
01423 924 Protected - 4+6 - -
01423 925 Protected - 4+6 - -
01423 926 Protected - 4+6 - -
01423 927 Protected - 4+6 - -
01423 928 Protected - 4+6 - -
01423 929 Protected - 4+6 - -
01423 930 Protected - 4+6 - -
01423 931 Protected - 4+6 - -
01423 932 Protected - 4+6 - -
01423 933 Protected - 4+6 - -
01423 934 Protected - 4+6 - -
01423 935 Protected - 4+6 - -
01423 936 Protected - 4+6 - -
01423 937 Protected - 4+6 - -
01423 938 Protected - 4+6 - -
01423 939 Protected - 4+6 - -
01423 940 Protected - 4+6 - -
01423 941 Protected - 4+6 - -
01423 942 Protected - 4+6 - -
01423 943 Protected - 4+6 - -
01423 944 Protected - 4+6 - -
01423 945 Protected - 4+6 - -
01423 946 Protected - 4+6 - -
01423 947 Protected - 4+6 - -
01423 948 Protected - 4+6 - -
01423 949 Protected - 4+6 - -
01423 950 Protected - 4+6 - -
01423 951 Protected - 4+6 - -
01423 952 Protected - 4+6 - -
01423 953 Protected - 4+6 - -
01423 954 Protected - 4+6 - -
01423 955 Protected - 4+6 - -
01423 956 Protected - 4+6 - -
01423 957 Protected - 4+6 - -
01423 958 Protected - 4+6 - -
01423 959 Protected - 4+6 - -
01423 960 Protected - 4+6 - -
01423 961 Protected - 4+6 - -
01423 962 Protected - 4+6 - -
01423 963 Protected - 4+6 - -
01423 964 Protected - 4+6 - -
01423 965 Protected - 4+6 - -
01423 966 Protected - 4+6 - -
01423 967 Protected - 4+6 - -
01423 968 Protected - 4+6 - -
01423 969 Protected - 4+6 - -
01423 970 Protected - 4+6 - -
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01423 972 Protected - 4+6 - -
01423 973 Protected - 4+6 - -
01423 974 Protected - 4+6 - -
01423 975 Protected - 4+6 - -
01423 976 Protected - 4+6 - -
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01423 985 Protected - 4+6 - -
01423 986 Protected - 4+6 - -
01423 987 Protected - 4+6 - -
01423 988 Protected - 4+6 - -
01423 989 Protected - 4+6 - -
01423 99 Protected - N/A - -