| Southwestern Ontario Area Code 226 Telephone Exchanges / Prefixes |
|---|
| Major Cities/Towns: London - Kitchener-Waterloo - Windsor - Brantford - Guelph |
|---|
| Prefix | Company | Status | Location |
|---|
| 544 | InnSysVoice Corp | Assigned | Ingersoll |
| 547 | InnSysVoice Corp | Assigned | Otterville |
| 551 | InnSysVoice Corp | Assigned | Tilbury |
| 553 | Fibernetics Corporation | Assigned | Tillsonburg |
| 557 | Fibernetics Corporation | Assigned | Woodstock |
| 560 | InnSysVoice Corp | Assigned | Wallaceburg |
| 562 | Bragg Communications Inc. | Assigned | Port Rowan |
| 563 | Bruce Municipal Telephone System | Assigned | Chesley |
| 601 | InnSysVoice Corp | Assigned | Ridgetown |
| 623 | Bragg Communications Inc. | Assigned | London |
| 639 | Iristel Inc. | Assigned | Belmont |
| 669 | InnSysVoice Corp | Assigned | Woodstock |
| 707 | InnSysVoice Corp | Assigned | Chatham |
| 708 | InnSysVoice Corp | Assigned | Erin |
| 709 | InnSysVoice Corp | Assigned | Dundalk |
| 710 | InnSysVoice Corp | Assigned | Sarnia |
| 712 | InnSysVoice Corp | Assigned | Caledon |
| 714 | InnSysVoice Corp | Assigned | Orangeville |
| 737 | InnSysVoice Corp | Assigned | Blenheim |
| 740 | InnSysVoice Corp | Assigned | Shelburne |
| 753 | Bell Mobility | Assigned | Kitchener-Waterloo |
| 801 | InnSysVoice Corp | Assigned | Tillsonburg |
| 822 | InnSysVoice Corp | Assigned | Windsor |
| 823 | Mornington Communications Co-operative Ltd. | Assigned | Linwood |
| 824 | Mornington Communications Co-operative Ltd. | Assigned | St. Clements |
| 843 | InnSysVoice Corp | Assigned | Leamington |
| 844 | InnSysVoice Corp | Assigned | Essex |
| 845 | InnSysVoice Corp | Assigned | Tecumseh |
| 870 | InnSysVoice Corp | Assigned | Watford |
| 877 | InnSysVoice Corp | Assigned | Amherstburg |
| 878 | InnSysVoice Corp | Assigned | Petrolia |
| 940 | InnSysVoice Corp | Assigned | Brights Grove |
| 960 | InnSysVoice Corp | Assigned | Corunna |
| 997 | InnSysVoice Corp | Assigned | Kingsville |
| 309 | | Available | |
| 537 | | Available | |
| 541 | | Available | |
| 546 | | Available | |
| 554 | | Available | |
| 559 | | Available | |
| 564 | | Available | |
| 576 | | Available | |
| 577 | | Available | |
| 578 | | Available | |
| 579 | | Available | |
| 607 | | Available | |
| 608 | | Available | |
| 609 | | Available | |
| 612 | | Available | |
| 613 | | Available | |
| 614 | | Available | |
| 615 | | Available | |
| 621 | | Available | |
| 624 | | Available | |
| 625 | | Available | |
| 628 | | Available | |
| 629 | | Available | |
| 631 | | Available | |
| 634 | | Available | |
| 635 | | Available | |
| 637 | | Available | |
| 638 | | Available | |
| 643 | | Available | |
| 645 | | Available | |
| 679 | | Available | |
| 685 | | Available | |
| 687 | | Available | |
| 689 | | Available | |
| 691 | | Available | |
| 692 | | Available | |
| 693 | | Available | |
| 694 | | Available | |
| 695 | | Available | |
| 697 | | Available | |
| 698 | | Available | |
| 703 | | Available | |
| 704 | | Available | |
| 705 | | Available | |
| 713 | | Available | |
| 715 | | Available | |
| 723 | | Available | |
| 724 | | Available | |
| 725 | | Available | |
| 729 | | Available | |
| 736 | | Available | |
| 739 | | Available | |
| 741 | | Available | |
| 742 | | Available | |
| 743 | | Available | |
| 745 | | Available | |
| 754 | | Available | |
| 756 | | Available | |
| 760 | | Available | |
| 761 | | Available | |
| 762 | | Available | |
| 763 | | Available | |
| 764 | | Available | |
| 768 | | Available | |
| 769 | | Available | |
| 793 | | Available | |
| 794 | | Available | |
| 807 | | Available | |
| 809 | | Available | |
| 814 | | Available | |
| 815 | | Available | |
| 829 | | Available | |
| 835 | | Available | |
| 836 | | Available | |
| 837 | | Available | |
| 839 | | Available | |
| 847 | | Available | |
| 849 | | Available | |
| 871 | | Available | |
| 872 | | Available | |
| 873 | | Available | |
| 874 | | Available | |
| 875 | | Available | |
| 876 | | Available | |
| 896 | | Available | |
| 903 | | Available | |
| 904 | | Available | |
| 905 | | Available | |
| 906 | | Available | |
| 907 | | Available | |
| 912 | | Available | |
| 913 | | Available | |
| 914 | | Available | |
| 915 | | Available | |
| 918 | | Available | |
| 956 | | Available | |
| 957 | | Available | |
| 965 | | Available | |
| 967 | | Available | |
| 211 | | For Special Use | |
| 311 | | For Special Use | |
| 411 | | For Special Use | |
| 511 | | For Special Use | |
| 555 | | For Special Use | |
| 611 | | For Special Use | |
| 711 | | For Special Use | |
| 811 | | For Special Use | |
| 911 | | For Special Use | |
| 950 | | For Special Use | |
| 976 | | For Special Use | |
| 200 | Fido Solutions Inc. | In Service | Orangeville |
| 201 | Fido Solutions Inc. | In Service | Hespeler |
| 202 | Fido Solutions Inc. | In Service | Leamington |
| 203 | TELUS Mobility | In Service | Guelph |
| 204 | TELUS Integrated Communications | In Service | Preston |
| 205 | TELUS Integrated Communications | In Service | Chatham |
| 206 | Fido Solutions Inc. | In Service | Simcoe |
| 207 | TELUS Integrated Communications | In Service | Harrow |
| 208 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 209 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 210 | Iristel Inc. | In Service | St. Thomas |
| 212 | Iristel Inc. | In Service | St. Thomas |
| 213 | Distributel | In Service | London |
| 214 | Distributel | In Service | Kitchener-Waterloo |
| 215 | Distributel | In Service | Kitchener-Waterloo |
| 216 | Distributel | In Service | Windsor |
| 217 | TELUS Integrated Communications | In Service | Guelph |
| 218 | Rogers Communications Canada Inc. (Wireless) | In Service | Hespeler |
| 219 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 220 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 221 | TELUS Integrated Communications | In Service | Windsor |
| 222 | TELUS Mobility | In Service | Goderich |
| 223 | Fibernetics Corporation | In Service | Drayton |
| 224 | Freedom Mobile Inc. | In Service | London |
| 225 | Fibernetics Corporation | In Service | Paris |
| 227 | Fibernetics Corporation | In Service | Brantford |
| 228 | Rogers Communications Canada Inc. (Wireless) | In Service | Woodstock |
| 229 | Rogers Communications Canada Inc. (Wireless) | In Service | Chatham |
| 230 | TELUS Mobility | In Service | Walkerton |
| 231 | TELUS Mobility | In Service | Tillsonburg |
| 232 | Rogers Communications Canada Inc. (Wireless) | In Service | Woodstock |
| 233 | Fibernetics Corporation | In Service | Linwood |
| 234 | TELUS Mobility | In Service | London |
| 235 | TELUS Mobility | In Service | London |
| 236 | TELUS Mobility | In Service | London |
| 237 | TELUS Mobility | In Service | London |
| 238 | TELUS Mobility | In Service | London |
| 239 | TELUS Mobility | In Service | London |
| 240 | Iristel Inc. | In Service | Kitchener-Waterloo |
| 241 | Iristel Inc. | In Service | Kitchener-Waterloo |
| 242 | Iristel Inc. | In Service | Woodstock |
| 243 | Iristel Inc. | In Service | Kitchener-Waterloo |
| 244 | Fibernetics Corporation | In Service | Wellesley |
| 245 | TELUS Integrated Communications | In Service | Meaford |
| 246 | Freedom Mobile Inc. | In Service | Windsor |
| 247 | TELUS Integrated Communications | In Service | McGregor |
| 248 | TELUS Integrated Communications | In Service | Wheatley |
| 249 | TELUS Integrated Communications | In Service | Thamesville |
| 250 | Allstream Inc. | In Service | Brantford |
| 251 | Allstream Inc. | In Service | Guelph |
| 252 | Allstream Inc. | In Service | Maidstone |
| 253 | TELUS Integrated Communications | In Service | Woodstock |
| 254 | TELUS Integrated Communications | In Service | Sarnia |
| 255 | Fibernetics Corporation | In Service | St. Clements |
| 256 | Fibernetics Corporation | In Service | Owen Sound |
| 257 | Fibernetics Corporation | In Service | Walkerton |
| 258 | Fibernetics Corporation | In Service | Durham |
| 259 | Fibernetics Corporation | In Service | Orangeville |
| 260 | Freedom Mobile Inc. | In Service | Windsor |
| 261 | Bell Mobility | In Service | Stratford |
| 262 | Tuckersmith Communications Co-operative Ltd. | In Service | Hensall |
| 263 | TELUS Integrated Communications | In Service | Paris |
| 264 | TELUS Integrated Communications | In Service | St. Marys |
| 265 | TELUS Integrated Communications | In Service | Lambeth |
| 266 | Fibernetics Corporation | In Service | Elmira |
| 267 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 268 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 269 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 270 | Iristel Inc. | In Service | London |
| 271 | Iristel Inc. | In Service | London |
| 272 | Iristel Inc. | In Service | London |
| 273 | Iristel Inc. | In Service | London |
| 274 | Bragg Communications Inc. | In Service | Dundalk |
| 275 | Gosfield North Communication Co-operative Ltd. | In Service | Woodslee |
| 276 | Bragg Communications Inc. | In Service | Thornbury |
| 277 | Comwave Networks | In Service | Owen Sound |
| 278 | Comwave Networks | In Service | Markdale |
| 279 | TELUS Integrated Communications | In Service | Owen Sound |
| 280 | Rogers Communications Canada Inc. (Wireless) | In Service | Windsor |
| 281 | Rogers Communications Canada Inc. (Wireless) | In Service | Chatham |
| 282 | Rogers Communications Canada Inc. (Wireless) | In Service | Chatham |
| 283 | Quadro Communications Co-operative Inc. | In Service | Kintore |
| 284 | TELUS Integrated Communications | In Service | Southampton |
| 285 | TELUS Integrated Communications | In Service | Walkerton |
| 286 | Iristel Inc. | In Service | Leamington |
| 287 | Bragg Communications Inc. | In Service | Flesherton |
| 288 | Fibernetics Corporation | In Service | St. Jacobs |
| 289 | Fibernetics Corporation | In Service | London |
| 290 | Execulink Telecom Inc. | In Service | Port Dover |
| 291 | TekSavvy Solutions Inc | In Service | Blenheim |
| 292 | TekSavvy Solutions Inc | In Service | Bothwell |
| 293 | TekSavvy Solutions Inc | In Service | Merlin |
| 294 | TekSavvy Solutions Inc | In Service | Dresden |
| 295 | TekSavvy Solutions Inc | In Service | Highgate |
| 296 | TekSavvy Solutions Inc | In Service | Chatham |
| 297 | TekSavvy Solutions Inc | In Service | Ridgetown |
| 298 | Comwave Networks | In Service | Acton |
| 299 | Comwave Networks | In Service | Guelph |
| 300 | Quadro Communications Co-operative Inc. | In Service | Stratford |
| 301 | Quadro Communications Co-operative Inc. | In Service | St. Marys |
| 302 | Quadro Communications Co-operative Inc. | In Service | Dublin |
| 303 | Quadro Communications Co-operative Inc. | In Service | Mitchell |
| 304 | Quadro Communications Co-operative Inc. | In Service | Lucan |
| 305 | Quadro Communications Co-operative Inc. | In Service | London |
| 306 | TELUS Integrated Communications | In Service | Listowel |
| 307 | TELUS Integrated Communications | In Service | Wyoming |
| 308 | Quadro Communications Co-operative Inc. | In Service | Ilderton |
| 312 | Distributel | In Service | Chatham |
| 313 | Distributel | In Service | Sarnia |
| 314 | Distributel | In Service | Guelph |
| 315 | Distributel | In Service | Windsor |
| 316 | Distributel | In Service | London |
| 317 | Distributel | In Service | Kitchener-Waterloo |
| 318 | Distributel | In Service | Galt |
| 319 | Distributel | In Service | Hespeler |
| 320 | Execulink Telecom Inc. | In Service | Princeton |
| 321 | Execulink Telecom Inc. | In Service | Otterville |
| 322 | Execulink Telecom Inc. | In Service | Innerkip |
| 323 | Execulink Telecom Inc. | In Service | Drumbo |
| 324 | Execulink Telecom Inc. | In Service | Eastwood |
| 325 | Execulink Telecom Inc. | In Service | Norwich |
| 326 | Execulink Telecom Inc. | In Service | Guelph |
| 327 | Execulink Telecom Inc. | In Service | Acton |
| 328 | Execulink Telecom Inc. | In Service | Rockwood |
| 329 | Execulink Telecom Inc. | In Service | Nairn |
| 330 | Distributel | In Service | London |
| 331 | Bell Mobility | In Service | Forest |
| 332 | Bell Mobility | In Service | Guelph |
| 333 | Fibernetics Corporation | In Service | New Hamburg |
| 334 | TekSavvy Solutions Inc | In Service | Thamesville |
| 335 | TekSavvy Solutions Inc | In Service | Tilbury |
| 336 | Fibernetics Corporation | In Service | Kitchener-Waterloo |
| 337 | TELUS Mobility | In Service | Guelph |
| 338 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 339 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 340 | TELUS Mobility | In Service | Windsor |
| 341 | TELUS Mobility | In Service | Hespeler |
| 342 | TELUS Mobility | In Service | Aylmer |
| 343 | TELUS Mobility | In Service | Guelph |
| 344 | TELUS Mobility | In Service | Windsor |
| 345 | TELUS Mobility | In Service | Windsor |
| 346 | TELUS Mobility | In Service | Windsor |
| 347 | TELUS Mobility | In Service | Windsor |
| 348 | TELUS Mobility | In Service | Windsor |
| 349 | TELUS Mobility | In Service | Sarnia |
| 350 | TELUS Mobility | In Service | Windsor |
| 351 | TELUS Integrated Communications | In Service | Tillsonburg |
| 352 | TELUS Integrated Communications | In Service | Tillsonburg |
| 353 | Fibernetics Corporation | In Service | Plattsville |
| 354 | TELUS Integrated Communications | In Service | Stratford |
| 355 | Fibernetics Corporation | In Service | Baden |
| 356 | TELUS Integrated Communications | In Service | Windsor |
| 357 | TELUS Integrated Communications | In Service | Sarnia |
| 358 | TELUS Integrated Communications | In Service | London |
| 359 | TELUS Integrated Communications | In Service | Kitchener-Waterloo |
| 360 | TELUS Integrated Communications | In Service | Hespeler |
| 361 | TELUS Integrated Communications | In Service | Guelph |
| 362 | TELUS Integrated Communications | In Service | Galt |
| 363 | TELUS Integrated Communications | In Service | Emeryville |
| 364 | TELUS Integrated Communications | In Service | Ridgetown |
| 365 | TELUS Integrated Communications | In Service | Dresden |
| 366 | Fibernetics Corporation | In Service | Breslau |
| 367 | TELUS Integrated Communications | In Service | Blenheim |
| 368 | TELUS Integrated Communications | In Service | Brantford |
| 369 | TELUS Integrated Communications | In Service | Elora |
| 370 | TELUS Integrated Communications | In Service | Fergus |
| 371 | TELUS Integrated Communications | In Service | Courtright |
| 372 | TELUS Integrated Communications | In Service | Oil Springs |
| 373 | Bell Mobility | In Service | London |
| 374 | Bell Mobility | In Service | London |
| 375 | Gosfield North Communication Co-operative Ltd. | In Service | Pleasant Park |
| 376 | Bell Mobility | In Service | London |
| 377 | Bell Mobility | In Service | London |
| 378 | Bell Mobility | In Service | London |
| 379 | Bell Mobility | In Service | Owen Sound |
| 380 | Bell Mobility | In Service | London |
| 381 | Execulink Telecom Inc. | In Service | Brantford |
| 383 | Wightman Communications Ltd. | In Service | Fergus |
| 384 | Wightman Communications Ltd. | In Service | Elora |
| 385 | Bell Mobility | In Service | London |
| 386 | Bell Mobility | In Service | London |
| 387 | Bell Mobility | In Service | Brantford |
| 388 | Bell Mobility | In Service | Brantford |
| 389 | Distributel | In Service | Sombra |
| 390 | Distributel | In Service | Petrolia |
| 391 | Bell Mobility | In Service | Tobermory |
| 392 | Distributel | In Service | Brights Grove |
| 393 | Fibernetics Corporation | In Service | Exeter |
| 394 | Distributel | In Service | Brigden |
| 395 | Bruce Municipal Telephone System | In Service | Ripley |
| 396 | Huron Telecommunications Co-operative Ltd. | In Service | Kincardine |
| 397 | Execulink Telecom Inc. | In Service | Langton |
| 398 | Execulink Telecom Inc. | In Service | Port Rowan |
| 399 | Distributel | In Service | Kitchener-Waterloo |
| 400 | Iristel Inc. | In Service | Brantford |
| 401 | Iristel Inc. | In Service | Brantford |
| 402 | Bell Mobility | In Service | Sarnia |
| 403 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 404 | Rogers Communications Canada Inc. (Wireless) | In Service | Chatham |
| 405 | Distributel | In Service | Bothwell |
| 406 | Iristel Inc. | In Service | Belmont |
| 407 | Iristel Inc. | In Service | Belmont |
| 408 | Iristel Inc. | In Service | Goderich |
| 409 | Gosfield North Communication Co-operative Ltd. | In Service | Belle River |
| 410 | Distributel | In Service | Thamesville |
| 412 | Distributel | In Service | Merlin |
| 413 | Distributel | In Service | Dresden |
| 414 | Distributel | In Service | Tilbury |
| 415 | Distributel | In Service | Highgate |
| 416 | Distributel | In Service | Blenheim |
| 417 | Distributel | In Service | Guelph |
| 418 | Distributel | In Service | Ridgetown |
| 419 | Distributel | In Service | Wallaceburg |
| 420 | Bragg Communications Inc. | In Service | Clinton |
| 421 | Bragg Communications Inc. | In Service | Goderich |
| 422 | Bragg Communications Inc. | In Service | Wingham |
| 423 | Bragg Communications Inc. | In Service | Exeter |
| 424 | Bragg Communications Inc. | In Service | Owen Sound |
| 425 | Bragg Communications Inc. | In Service | Centralia |
| 426 | Bragg Communications Inc. | In Service | Crediton |
| 427 | Bragg Communications Inc. | In Service | Glencoe |
| 428 | Bragg Communications Inc. | In Service | Neustadt |
| 429 | Bragg Communications Inc. | In Service | Harriston |
| 430 | Bragg Communications Inc. | In Service | Listowel |
| 431 | Bragg Communications Inc. | In Service | Palmerston |
| 432 | Bragg Communications Inc. | In Service | Durham |
| 433 | Bragg Communications Inc. | In Service | Chesley |
| 434 | Bragg Communications Inc. | In Service | Hanover |
| 435 | Bragg Communications Inc. | In Service | Southampton |
| 436 | Bragg Communications Inc. | In Service | Walkerton |
| 437 | Bragg Communications Inc. | In Service | Ayton |
| 438 | Bragg Communications Inc. | In Service | Paisley |
| 439 | Bragg Communications Inc. | In Service | Milverton |
| 440 | Bragg Communications Inc. | In Service | Simcoe |
| 441 | Bragg Communications Inc. | In Service | Bayfield |
| 442 | Bragg Communications Inc. | In Service | Dashwood |
| 443 | Bragg Communications Inc. | In Service | Arthur |
| 444 | Iristel Inc. | In Service | Kitchener-Waterloo |
| 445 | Bragg Communications Inc. | In Service | Mount Forest |
| 446 | Fibernetics Corporation | In Service | Ohsweken |
| 447 | Bragg Communications Inc. | In Service | Clinton Independant |
| 448 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 449 | Fibernetics Corporation | In Service | Fergus |
| 450 | Freedom Mobile Inc. | In Service | Brantford |
| 451 | Distributel | In Service | Wyoming |
| 452 | Bragg Communications Inc. | In Service | Markdale |
| 453 | Bragg Communications Inc. | In Service | Port Elgin |
| 454 | Bragg Communications Inc. | In Service | Mildmay |
| 455 | Iristel Inc. | In Service | Clinton |
| 456 | TELUS Mobility | In Service | London |
| 457 | Iristel Inc. | In Service | Clinton |
| 458 | Iristel Inc. | In Service | Goderich |
| 459 | TELUS Integrated Communications | In Service | Sauble Beach |
| 461 | Execulink Telecom Inc. | In Service | Wyoming |
| 462 | Execulink Telecom Inc. | In Service | Watford |
| 463 | Execulink Telecom Inc. | In Service | Sombra |
| 464 | Execulink Telecom Inc. | In Service | Port Lambton |
| 465 | Execulink Telecom Inc. | In Service | Petrolia |
| 466 | Execulink Telecom Inc. | In Service | Oil Springs |
| 467 | Execulink Telecom Inc. | In Service | Courtright |
| 468 | Execulink Telecom Inc. | In Service | Corunna |
| 469 | Execulink Telecom Inc. | In Service | Brights Grove |
| 470 | Execulink Telecom Inc. | In Service | Brigden |
| 471 | Execulink Telecom Inc. | In Service | Alvinston |
| 472 | Execulink Telecom Inc. | In Service | Sarnia |
| 473 | ISP Telecom | In Service | Preston |
| 474 | ISP Telecom | In Service | Galt |
| 475 | ISP Telecom | In Service | Hespeler |
| 476 | ISP Telecom | In Service | Kitchener-Waterloo |
| 477 | ISP Telecom | In Service | Amherstburg |
| 478 | ISP Telecom | In Service | Belle River |
| 479 | ISP Telecom | In Service | Essex |
| 480 | ISP Telecom | In Service | Harrow |
| 481 | ISP Telecom | In Service | Maidstone |
| 482 | ISP Telecom | In Service | McGregor |
| 483 | ISP Telecom | In Service | Stoney Point |
| 484 | ISP Telecom | In Service | Wheatley |
| 485 | ISP Telecom | In Service | Woodslee |
| 486 | ISP Telecom | In Service | Guelph |
| 488 | Execulink Telecom Inc. | In Service | Glencoe |
| 489 | Execulink Telecom Inc. | In Service | Belmont |
| 490 | Execulink Telecom Inc. | In Service | Mount Brydges |
| 491 | Execulink Telecom Inc. | In Service | Centralia |
| 492 | Execulink Telecom Inc. | In Service | Crediton |
| 493 | ISP Telecom | In Service | Brantford |
| 494 | ISP Telecom | In Service | Chatham |
| 495 | TELUS Integrated Communications | In Service | Thornbury |
| 496 | Distributel | In Service | Oil Springs |
| 497 | Distributel | In Service | Corunna |
| 498 | Distributel | In Service | Courtright |
| 499 | Iristel Inc. | In Service | Kitchener-Waterloo |
| 500 | Freedom Mobile Inc. | In Service | Guelph |
| 501 | Freedom Mobile Inc. | In Service | Guelph |
| 502 | Distributel | In Service | Port Lambton |
| 503 | Freedom Mobile Inc. | In Service | London |
| 504 | Freedom Mobile Inc. | In Service | London |
| 505 | Freedom Mobile Inc. | In Service | Kitchener-Waterloo |
| 506 | Freedom Mobile Inc. | In Service | Windsor |
| 507 | Freedom Mobile Inc. | In Service | Kitchener-Waterloo |
| 508 | Distributel | In Service | Watford |
| 509 | Distributel | In Service | Alvinston |
| 510 | Distributel | In Service | Breslau |
| 512 | Distributel | In Service | Preston |
| 513 | Rogers Communications Canada Inc. (Cable) | In Service | Jarvis |
| 514 | Rogers Communications Canada Inc. (Cable) | In Service | Simcoe |
| 515 | Distributel | In Service | St. Clements |
| 516 | Distributel | In Service | Linwood |
| 517 | Distributel | In Service | New Dundee |
| 518 | Distributel | In Service | Plattsville |
| 520 | Execulink Telecom Inc. | In Service | Forest |
| 521 | Execulink Telecom Inc. | In Service | Arkona |
| 522 | Distributel | In Service | Elmira |
| 523 | Tuckersmith Communications Co-operative Ltd. | In Service | Blyth |
| 524 | Wightman Communications Ltd. | In Service | Arthur |
| 525 | Wightman Communications Ltd. | In Service | Shelburne |
| 526 | Fibernetics Corporation | In Service | Windsor |
| 527 | Distributel | In Service | St. Jacobs |
| 528 | Distributel | In Service | New Hamburg |
| 529 | Distributel | In Service | Wellesley |
| 530 | Distributel | In Service | Drayton |
| 531 | Distributel | In Service | Baden |
| 532 | Fibernetics Corporation | In Service | Clinton |
| 533 | Fibernetics Corporation | In Service | Galt |
| 534 | Fibernetics Corporation | In Service | Simcoe |
| 535 | Fibernetics Corporation | In Service | Preston |
| 536 | Quadro Communications Co-operative Inc. | In Service | Woodstock |
| 538 | Distributel | In Service | Ayr |
| 539 | Distributel | In Service | Rockwood |
| 540 | Distributel | In Service | Acton |
| 542 | Bell Mobility | In Service | Chatham |
| 543 | Bell Mobility | In Service | Goderich |
| 545 | Bell Mobility | In Service | Aylmer |
| 549 | Execulink Telecom Inc. | In Service | Delhi |
| 550 | Execulink Telecom Inc. | In Service | Simcoe |
| 552 | Freedom Mobile Inc. | In Service | Brantford |
| 556 | Fibernetics Corporation | In Service | Ayr |
| 558 | Rogers Communications Canada Inc. (Wireless) | In Service | Orangeville |
| 561 | Quadro Communications Co-operative Inc. | In Service | Thorndale |
| 565 | Fibernetics Corporation | In Service | New Dundee |
| 566 | Fibernetics Corporation | In Service | Hespeler |
| 567 | TELUS Mobility | In Service | Simcoe |
| 568 | TELUS Mobility | In Service | Owen Sound |
| 569 | Distributel | In Service | Ailsa Craig |
| 570 | Distributel | In Service | Belmont |
| 571 | Distributel | In Service | Centralia |
| 572 | Distributel | In Service | Crediton |
| 573 | Distributel | In Service | Dorchester |
| 574 | Distributel | In Service | Exeter |
| 575 | Quadro Communications Co-operative Inc. | In Service | Embro |
| 580 | TELUS Mobility | In Service | London |
| 581 | TELUS Mobility | In Service | Kitchener-Waterloo |
| 582 | TELUS Mobility | In Service | London |
| 583 | TELUS Mobility | In Service | Brantford |
| 584 | TELUS Mobility | In Service | Stratford |
| 585 | Distributel | In Service | Glencoe |
| 586 | Distributel | In Service | Harrietsville |
| 587 | Distributel | In Service | Ilderton |
| 588 | Primus Telecommunications Canada Inc. | In Service | Galt |
| 589 | Primus Telecommunications Canada Inc. | In Service | Hespeler |
| 590 | Distributel | In Service | Kerwood |
| 591 | Distributel | In Service | Lambeth |
| 592 | Bell Canada | In Service | Kitchener-Waterloo |
| 593 | Distributel | In Service | Lucan |
| 594 | Distributel | In Service | Melbourne |
| 595 | Distributel | In Service | Mount Brydges |
| 596 | Distributel | In Service | Nairn |
| 597 | Distributel | In Service | Parkhill |
| 598 | Distributel | In Service | Strathroy |
| 599 | Distributel | In Service | London |
| 600 | Freedom Mobile Inc. | In Service | Kitchener-Waterloo |
| 602 | Iristel Inc. | In Service | Essex |
| 603 | Distributel | In Service | Thorndale |
| 604 | Distributel | In Service | Wardsville |
| 605 | Iristel Inc. | In Service | Essex |
| 606 | Freedom Mobile Inc. | In Service | Kitchener-Waterloo |
| 616 | Comwave Networks | In Service | Galt |
| 617 | Comwave Networks | In Service | Comber |
| 618 | Comwave Networks | In Service | Stoney Point |
| 619 | Comwave Networks | In Service | Wheatley |
| 620 | Comwave Networks | In Service | Windsor |
| 622 | TELUS Mobility | In Service | Listowel |
| 626 | TELUS Mobility | In Service | Chatham |
| 627 | TELUS Mobility | In Service | Chatham |
| 630 | Rogers Communications Canada Inc. (Cable) | In Service | Jarvis |
| 632 | Comwave Networks | In Service | Breslau |
| 633 | Comwave Networks | In Service | Stratford |
| 636 | Distributel | In Service | London |
| 640 | Iristel Inc. | In Service | Listowel |
| 641 | Iristel Inc. | In Service | Tillsonburg |
| 642 | Comwave Networks | In Service | Ayr |
| 644 | InnSysVoice Corp | In Service | Brantford |
| 646 | Distributel | In Service | Kitchener-Waterloo |
| 647 | Rogers Communications Canada Inc. (Cable) | In Service | Kitchener-Waterloo |
| 648 | Rogers Communications Canada Inc. (Cable) | In Service | Shakespeare |
| 649 | Rogers Communications Canada Inc. (Cable) | In Service | Bright |
| 650 | Rogers Communications Canada Inc. (Cable) | In Service | Shedden |
| 651 | Rogers Communications Canada Inc. (Cable) | In Service | Fingal |
| 652 | Rogers Communications Canada Inc. (Cable) | In Service | Princeton |
| 653 | Rogers Communications Canada Inc. (Cable) | In Service | Sparta |
| 654 | Rogers Communications Canada Inc. (Cable) | In Service | Mount Pleasant |
| 655 | Rogers Communications Canada Inc. (Cable) | In Service | Scotland |
| 656 | Rogers Communications Canada Inc. (Cable) | In Service | Plattsville |
| 657 | Rogers Communications Canada Inc. (Cable) | In Service | Beachville |
| 658 | Rogers Communications Canada Inc. (Cable) | In Service | Port Stanley |
| 659 | Rogers Communications Canada Inc. (Cable) | In Service | Burford |
| 660 | Rogers Communications Canada Inc. (Cable) | In Service | Wellesley |
| 661 | Rogers Communications Canada Inc. (Cable) | In Service | St. Marys |
| 662 | Rogers Communications Canada Inc. (Cable) | In Service | Meaford |
| 663 | Rogers Communications Canada Inc. (Cable) | In Service | London |
| 664 | Rogers Communications Canada Inc. (Cable) | In Service | Owen Sound |
| 665 | Rogers Communications Canada Inc. (Cable) | In Service | Thornbury |
| 666 | Fibernetics Corporation | In Service | Kitchener-Waterloo |
| 667 | Fibernetics Corporation | In Service | London |
| 668 | Rogers Communications Canada Inc. (Wireless) | In Service | Owen Sound |
| 670 | Comwave Networks | In Service | Wardsville |
| 671 | Managed Network Systems Inc. | In Service | Chatham |
| 672 | Managed Network Systems Inc. | In Service | Sarnia |
| 673 | Managed Network Systems Inc. | In Service | Kitchener-Waterloo |
| 674 | Managed Network Systems Inc. | In Service | Windsor |
| 675 | Managed Network Systems Inc. | In Service | La Salle |
| 676 | Managed Network Systems Inc. | In Service | Tecumseh |
| 677 | InnSysVoice Corp | In Service | Paris |
| 678 | TELUS Mobility | In Service | London |
| 680 | Comwave Networks | In Service | London |
| 681 | Comwave Networks | In Service | Walkerton |
| 682 | Comwave Networks | In Service | Thornbury |
| 683 | Managed Network Systems Inc. | In Service | Emeryville |
| 684 | Managed Network Systems Inc. | In Service | Belle River |
| 686 | Comwave Networks | In Service | Kitchener-Waterloo |
| 688 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 690 | Comwave Networks | In Service | Glencoe |
| 696 | Comwave Networks | In Service | Hespeler |
| 699 | Comwave Networks | In Service | Clinton |
| 700 | Freedom Mobile Inc. | In Service | London |
| 701 | InnSysVoice Corp | In Service | London |
| 702 | Iristel Inc. | In Service | Durham |
| 706 | Fibernetics Corporation | In Service | Guelph |
| 716 | Comwave Networks | In Service | Alvinston |
| 717 | Comwave Networks | In Service | Port Lambton |
| 718 | Comwave Networks | In Service | Sarnia |
| 719 | Comwave Networks | In Service | Sombra |
| 720 | Comwave Networks | In Service | Watford |
| 721 | Primus Telecommunications Canada Inc. | In Service | London |
| 722 | Primus Telecommunications Canada Inc. | In Service | Windsor |
| 726 | Fibernetics Corporation | In Service | Strathroy |
| 727 | Gosfield North Communication Co-operative Ltd. | In Service | Emeryville |
| 728 | Hay Communications Co-operative ltd. | In Service | Centralia |
| 730 | Comwave Networks | In Service | Brantford |
| 731 | Comwave Networks | In Service | Lynden |
| 732 | Comwave Networks | In Service | Ohsweken |
| 733 | Comwave Networks | In Service | Paris |
| 734 | Comwave Networks | In Service | St. George |
| 735 | Hay Communications Co-operative ltd. | In Service | Exeter |
| 738 | TELUS Integrated Communications | In Service | Petrolia |
| 744 | Hay Communications Co-operative ltd. | In Service | Crediton |
| 746 | TekSavvy Solutions Inc | In Service | Wallaceburg |
| 747 | Bell Mobility | In Service | Kitchener-Waterloo |
| 748 | Bell Mobility | In Service | Kitchener-Waterloo |
| 749 | Bell Mobility | In Service | Kitchener-Waterloo |
| 750 | Bell Mobility | In Service | Kitchener-Waterloo |
| 751 | Bell Mobility | In Service | Kitchener-Waterloo |
| 752 | Bell Mobility | In Service | Kitchener-Waterloo |
| 755 | Bell Mobility | In Service | Hespeler |
| 757 | Bell Mobility | In Service | Windsor |
| 758 | Bell Mobility | In Service | Windsor |
| 759 | Bell Mobility | In Service | Windsor |
| 765 | TELUS Integrated Communications | In Service | Galt |
| 766 | Fibernetics Corporation | In Service | Stratford |
| 767 | Fibernetics Corporation | In Service | Listowel |
| 770 | Iristel Inc. | In Service | Guelph |
| 771 | Iristel Inc. | In Service | Guelph |
| 772 | Allstream Inc. | In Service | Kitchener-Waterloo |
| 773 | Iristel Inc. | In Service | Windsor |
| 774 | Iristel Inc. | In Service | Windsor |
| 775 | Iristel Inc. | In Service | Stratford |
| 776 | Fibernetics Corporation | In Service | Sarnia |
| 777 | Iristel Inc. | In Service | London |
| 778 | Iristel Inc. | In Service | Sarnia |
| 779 | Iristel Inc. | In Service | Stratford |
| 780 | Iristel Inc. | In Service | Guelph |
| 781 | Iristel Inc. | In Service | London |
| 782 | Iristel Inc. | In Service | Windsor |
| 783 | Iristel Inc. | In Service | Windsor |
| 784 | Iristel Inc. | In Service | Sarnia |
| 785 | Iristel Inc. | In Service | London |
| 786 | Iristel Inc. | In Service | Stratford |
| 787 | Bell Mobility | In Service | Windsor |
| 788 | Bell Mobility | In Service | Windsor |
| 789 | TELUS Mobility | In Service | Kitchener-Waterloo |
| 790 | Iristel Inc. | In Service | Guelph |
| 791 | TELUS Mobility | In Service | Kitchener-Waterloo |
| 792 | TELUS Mobility | In Service | Kitchener-Waterloo |
| 795 | Iristel Inc. | In Service | Woodstock |
| 796 | Iristel Inc. | In Service | Woodstock |
| 797 | Iristel Inc. | In Service | Chatham |
| 798 | Iristel Inc. | In Service | Chatham |
| 799 | Iristel Inc. | In Service | Chatham |
| 800 | InnSysVoice Corp | In Service | Kitchener-Waterloo |
| 802 | TELUS Mobility | In Service | Brantford |
| 803 | Iristel Inc. | In Service | Windsor |
| 804 | Iristel Inc. | In Service | Windsor |
| 805 | Iristel Inc. | In Service | Windsor |
| 806 | Iristel Inc. | In Service | Kitchener-Waterloo |
| 808 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 812 | Navigata Communications Limited | In Service | Kitchener-Waterloo |
| 813 | Navigata Communications Limited | In Service | London |
| 816 | Mornington Communications Co-operative Ltd. | In Service | Atwood |
| 817 | Mornington Communications Co-operative Ltd. | In Service | Monkton |
| 818 | Mornington Communications Co-operative Ltd. | In Service | Drayton |
| 819 | Mornington Communications Co-operative Ltd. | In Service | Wellesley |
| 820 | Bell Mobility | In Service | Guelph |
| 821 | Bell Mobility | In Service | Guelph |
| 825 | TELUS Integrated Communications | In Service | Ingersoll |
| 826 | TELUS Integrated Communications | In Service | Windsor |
| 827 | TELUS Integrated Communications | In Service | Maidstone |
| 828 | Fibernetics Corporation | In Service | Acton |
| 830 | Comwave Networks | In Service | Chatham |
| 831 | Comwave Networks | In Service | Highgate |
| 832 | Comwave Networks | In Service | Tilbury |
| 833 | Comwave Networks | In Service | Wallaceburg |
| 834 | Comwave Networks | In Service | Bothwell |
| 838 | Fibernetics Corporation | In Service | Rockwood |
| 840 | Iristel Inc. | In Service | Walkerton |
| 841 | Iristel Inc. | In Service | Wingham |
| 842 | Iristel Inc. | In Service | Sarnia |
| 846 | Brooke Telecom Co-operative Ltd. | In Service | Alvinston |
| 848 | Brooke Telecom Co-operative Ltd. | In Service | Watford |
| 850 | TELUS Integrated Communications | In Service | Orangeville |
| 851 | TELUS Integrated Communications | In Service | Brantford |
| 852 | TELUS Integrated Communications | In Service | Stratford |
| 853 | TELUS Integrated Communications | In Service | Mount Forest |
| 854 | InnSysVoice Corp | In Service | Ayr |
| 855 | InnSysVoice Corp | In Service | Baden |
| 856 | InnSysVoice Corp | In Service | Breslau |
| 857 | InnSysVoice Corp | In Service | Drayton |
| 858 | InnSysVoice Corp | In Service | Elmira |
| 859 | InnSysVoice Corp | In Service | Galt |
| 860 | InnSysVoice Corp | In Service | Hespeler |
| 861 | InnSysVoice Corp | In Service | Linwood |
| 862 | InnSysVoice Corp | In Service | New Dundee |
| 863 | InnSysVoice Corp | In Service | New Hamburg |
| 864 | InnSysVoice Corp | In Service | Plattsville |
| 865 | InnSysVoice Corp | In Service | Preston |
| 866 | InnSysVoice Corp | In Service | St. Clements |
| 867 | InnSysVoice Corp | In Service | St. Jacobs |
| 868 | TELUS Mobility | In Service | Kitchener-Waterloo |
| 869 | InnSysVoice Corp | In Service | Wellesley |
| 879 | TELUS Integrated Communications | In Service | Shelburne |
| 880 | Fido Solutions Inc. | In Service | Stratford |
| 881 | Fido Solutions Inc. | In Service | Chatham |
| 882 | Rogers Communications Canada Inc. (Wireless) | In Service | Chatham |
| 883 | Fido Solutions Inc. | In Service | Woodstock |
| 884 | Fibernetics Corporation | In Service | London |
| 885 | Fido Solutions Inc. | In Service | Listowel |
| 886 | Fido Solutions Inc. | In Service | Sarnia |
| 887 | Iristel Inc. | In Service | Hespeler |
| 888 | TELUS Mobility | In Service | Woodstock |
| 889 | Tuckersmith Communications Co-operative Ltd. | In Service | Brussels |
| 890 | Iristel Inc. | In Service | Hespeler |
| 891 | TELUS Integrated Communications | In Service | Grand Valley |
| 892 | TELUS Integrated Communications | In Service | Erin |
| 893 | TELUS Integrated Communications | In Service | Dundalk |
| 894 | Iristel Inc. | In Service | Galt |
| 895 | Iristel Inc. | In Service | Galt |
| 897 | TELUS Integrated Communications | In Service | Arthur |
| 898 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 899 | Fido Solutions Inc. | In Service | Kitchener-Waterloo |
| 900 | InnSysVoice Corp | In Service | Guelph |
| 901 | InnSysVoice Corp | In Service | Acton |
| 902 | InnSysVoice Corp | In Service | Rockwood |
| 908 | Iristel Inc. | In Service | Owen Sound |
| 909 | Iristel Inc. | In Service | Owen Sound |
| 910 | Iristel Inc. | In Service | Owen Sound |
| 916 | Iristel Inc. | In Service | Orangeville |
| 917 | Iristel Inc. | In Service | Orangeville |
| 919 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 920 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 921 | Rogers Communications Canada Inc. (Wireless) | In Service | Stratford |
| 922 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 923 | Fido Solutions Inc. | In Service | Owen Sound |
| 924 | Rogers Communications Canada Inc. (Wireless) | In Service | Hespeler |
| 925 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 926 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 927 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 928 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 929 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 930 | Rogers Communications Canada Inc. (Wireless) | In Service | Port Elgin |
| 931 | Rogers Communications Canada Inc. (Wireless) | In Service | Simcoe |
| 932 | Rogers Communications Canada Inc. (Wireless) | In Service | Sarnia |
| 933 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 934 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 935 | Rogers Communications Canada Inc. (Wireless) | In Service | Windsor |
| 936 | Rogers Communications Canada Inc. (Wireless) | In Service | Leamington |
| 937 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 938 | Rogers Communications Canada Inc. (Wireless) | In Service | Brantford |
| 939 | Fido Solutions Inc. | In Service | Goderich |
| 941 | TELUS Integrated Communications | In Service | Strathroy |
| 942 | TELUS Integrated Communications | In Service | Parkhill |
| 943 | TELUS Integrated Communications | In Service | Lucan |
| 944 | TELUS Integrated Communications | In Service | Glencoe |
| 945 | TELUS Integrated Communications | In Service | Exeter |
| 946 | Fibernetics Corporation | In Service | Windsor |
| 947 | TELUS Integrated Communications | In Service | Dorchester |
| 948 | TELUS Integrated Communications | In Service | Belmont |
| 949 | TELUS Integrated Communications | In Service | Wiarton |
| 951 | TELUS Integrated Communications | In Service | Markdale |
| 952 | TELUS Integrated Communications | In Service | Hanover |
| 953 | TELUS Integrated Communications | In Service | Durham |
| 954 | TELUS Integrated Communications | In Service | Chesley |
| 955 | TELUS Integrated Communications | In Service | Chatsworth |
| 961 | Fido Solutions Inc. | In Service | Windsor |
| 962 | Rogers Communications Canada Inc. (Wireless) | In Service | Guelph |
| 963 | Rogers Communications Canada Inc. (Wireless) | In Service | Goderich |
| 964 | Rogers Communications Canada Inc. (Wireless) | In Service | Sarnia |
| 966 | Fido Solutions Inc. | In Service | Brantford |
| 968 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 969 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 970 | Rogers Communications Canada Inc. (Wireless) | In Service | Tillsonburg |
| 971 | Rogers Communications Canada Inc. (Wireless) | In Service | Guelph |
| 972 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 973 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 974 | Rogers Communications Canada Inc. (Wireless) | In Service | Owen Sound |
| 975 | Fido Solutions Inc. | In Service | Windsor |
| 977 | Fido Solutions Inc. | In Service | London |
| 978 | Fido Solutions Inc. | In Service | Kitchener-Waterloo |
| 979 | Rogers Communications Canada Inc. (Wireless) | In Service | Guelph |
| 980 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 981 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 982 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 983 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 984 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 985 | Rogers Communications Canada Inc. (Wireless) | In Service | London |
| 986 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 987 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 988 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 989 | Rogers Communications Canada Inc. (Wireless) | In Service | Kitchener-Waterloo |
| 990 | Fido Solutions Inc. | In Service | Walkerton |
| 991 | Fido Solutions Inc. | In Service | Mount Forest |
| 992 | Fido Solutions Inc. | In Service | Port Elgin |
| 993 | Fido Solutions Inc. | In Service | Tillsonburg |
| 994 | Fido Solutions Inc. | In Service | St. Thomas |
| 995 | Fido Solutions Inc. | In Service | Wingham |
| 996 | Fibernetics Corporation | In Service | Chatham |
| 998 | Fido Solutions Inc. | In Service | London |
| 999 | TELUS Mobility | In Service | Stratford |
| 310 | | Moratorium on Assignment | |
| 610 | | Moratorium on Assignment | |
| 810 | | Moratorium on Assignment | |
| 226 | | Not Available | |
| 382 | | Not Available | |
| 460 | | Not Available | |
| 487 | | Not Available | |
| 519 | | Not Available | |
| 548 | | Not Available | |
| 958 | | Plant Test | |
| 959 | | Plant Test | |
12.4% of the exchanges in this area code are still available.