| 289 - Southern Ontario Area Code 289 Telephone Exchanges / Prefixes |
|---|
| Major Cities/Towns: Hamilton - Oakville - Oshawa - St. Catharines-Thorold - Brampton |
|---|
| Prefix | Company | Status | Location |
|---|
| 211 | | For Special Use | |
| 249 | | Not Available | |
| 289 | | Not Available | |
| 310 | | Moratorium on Assignment | |
| 311 | | For Special Use | |
| 343 | | Not Available | |
| 365 | | Not Available | |
| 411 | | For Special Use | |
| 416 | | Not Available | |
| 437 | | Not Available | |
| 511 | | For Special Use | |
| 555 | | For Special Use | |
| 610 | | Moratorium on Assignment | |
| 611 | | For Special Use | |
| 613 | | Not Available | |
| 647 | | Not Available | |
| 705 | | Not Available | |
| 711 | | For Special Use | |
| 742 | | Not Available | |
| 810 | | Moratorium on Assignment | |
| 811 | | For Special Use | |
| 905 | | Not Available | |
| 911 | | For Special Use | |
| 942 | | Not Available | |
| 950 | | For Special Use | |
| 958 | | Plant Test | |
| 959 | | Plant Test | |
| 976 | | For Special Use | |
| 200 | Rogers Communications Canada Inc. (Wireless) | In Service | Ajax-Pickering |
| 224 | Fibernetics Corporation | In Service | Ajax-Pickering |
| 255 | TELUS Integrated Communications | In Service | Ajax-Pickering |
| 275 | Iristel Inc. | In Service | Ajax-Pickering |
| 314 | Bell Mobility | In Service | Ajax-Pickering |
| 315 | Distributel | In Service | Ajax-Pickering |
| 372 | Zayo Canada Inc. | In Service | Ajax-Pickering |
| 387 | Bell Mobility | In Service | Ajax-Pickering |
| 388 | Bell Mobility | In Service | Ajax-Pickering |
| 403 | Bell Canada | In Service | Ajax-Pickering |
| 417 | TELUS Integrated Communications | In Service | Ajax-Pickering |
| 422 | TELUS Integrated Communications | In Service | Ajax-Pickering |
| 423 | TELUS Mobility | In Service | Ajax-Pickering |
| 460 | Iristel Inc. | In Service | Ajax-Pickering |
| 482 | ISP Telecom Inc. | In Service | Ajax-Pickering |
| 533 | InnSysVoice Corp | In Service | Ajax-Pickering |
| 539 | Distributel | In Service | Ajax-Pickering |
| 545 | Distributel | In Service | Ajax-Pickering |
| 591 | TELUS Mobility | In Service | Ajax-Pickering |
| 608 | Fibernetics Corporation | In Service | Ajax-Pickering |
| 624 | Fibernetics Corporation | In Service | Ajax-Pickering |
| 660 | Rogers Communications Canada Inc. (Cable) | In Service | Ajax-Pickering |
| 733 | Distributel | In Service | Ajax-Pickering |
| 892 | Fido Solutions Inc. | In Service | Ajax-Pickering |
| 913 | Comwave Networks | In Service | Ajax-Pickering |
| 923 | Rogers Communications Canada Inc. (Wireless) | In Service | Ajax-Pickering |
| 980 | Rogers Communications Canada Inc. (Wireless) | In Service | Ajax-Pickering |
| 987 | TELUS Mobility | In Service | Ajax-Pickering |
| 988 | TELUS Mobility | In Service | Ajax-Pickering |
| 204 | Iristel Inc. | In Service | Ancaster |
| 239 | TELUS Integrated Communications | In Service | Ancaster |
| 346 | Rogers Communications Canada Inc. (Cable) | In Service | Ancaster |
| 443 | Bell Canada | In Service | Ancaster |
| 445 | ISP Telecom Inc. | In Service | Ancaster |
| 450 | Zayo Canada Inc. | In Service | Ancaster |
| 495 | Execulink Telecom Inc. | In Service | Ancaster |
| 515 | Rogers Communications Canada Inc. (Cable) | In Service | Ancaster |
| 735 | Rogers Communications Canada Inc. (Cable) | In Service | Ancaster |
| 739 | InnSysVoice Corp | In Service | Ancaster |
| 855 | Fibernetics Corporation | In Service | Ancaster |
| 902 | Iristel Inc. | In Service | Ancaster |
| 221 | Rogers Communications Canada Inc. (Wireless) | In Service | Aurora |
| 258 | InnSysVoice Corp | In Service | Aurora |
| 380 | Rogers Communications Canada Inc. (Wireless) | In Service | Aurora |
| 466 | ISP Telecom Inc. | In Service | Aurora |
| 552 | Rogers Communications Canada Inc. (Wireless) | In Service | Aurora |
| 571 | Fibernetics Corporation | In Service | Aurora |
| 614 | Comwave Networks | In Service | Aurora |
| 648 | Fibernetics Corporation | In Service | Aurora |
| 796 | Iristel Inc. | In Service | Aurora |
| 802 | Iristel Inc. | In Service | Aurora |
| 840 | Primus Telecommunications Canada Inc. | In Service | Aurora |
| 879 | TELUS Mobility | In Service | Aurora |
| 894 | Fido Solutions Inc. | In Service | Aurora |
| 984 | TELUS Integrated Communications | In Service | Aurora |
| 995 | TELUS Mobility | In Service | Aurora |
| 432 | Distributel | In Service | Beamsville |
| 566 | TELUS Integrated Communications | In Service | Beamsville |
| 602 | Comwave Networks | In Service | Beamsville |
| 415 | TELUS Integrated Communications | In Service | Beeton |
| 899 | TELUS Mobility | In Service | Beeton |
| 970 | Fido Solutions Inc. | In Service | Beeton |
| 262 | InnSysVoice Corp | In Service | Bethesda |
| 615 | Comwave Networks | In Service | Bethesda |
| 286 | Zayo Canada Inc. | In Service | Binbrook |
| 287 | Zayo Canada Inc. | In Service | Binbrook |
| 424 | ISP Telecom Inc. | In Service | Binbrook |
| 522 | Rogers Communications Canada Inc. (Cable) | In Service | Binbrook |
| 568 | TELUS Integrated Communications | In Service | Binbrook |
| 743 | InnSysVoice Corp | In Service | Binbrook |
| 756 | Rogers Communications Canada Inc. (Cable) | In Service | Binbrook |
| 702 | InnSysVoice Corp | In Service | Blackstock |
| 206 | Iristel Inc. | In Service | Bolton |
| 461 | InnSysVoice Corp | In Service | Bolton |
| 487 | ISP Telecom Inc. | In Service | Bolton |
| 503 | ExaTEL Inc. | In Service | Bolton |
| 585 | Fibernetics Corporation | In Service | Bolton |
| 616 | Comwave Networks | In Service | Bolton |
| 651 | Fibernetics Corporation | In Service | Bolton |
| 875 | TELUS Integrated Communications | In Service | Bolton |
| 906 | Iristel Inc. | In Service | Bolton |
| 223 | Fibernetics Corporation | In Service | Bowmanville |
| 276 | Iristel Inc. | In Service | Bowmanville |
| 513 | Iristel Inc. | In Service | Bowmanville |
| 626 | Fibernetics Corporation | In Service | Bowmanville |
| 703 | InnSysVoice Corp | In Service | Bowmanville |
| 464 | ISP Telecom Inc. | In Service | Bradford |
| 831 | Fibernetics Corporation | In Service | Bradford |
| 201 | Iristel Inc. | In Service | Brampton |
| 233 | TELUS Mobility | In Service | Brampton |
| 298 | ISP Telecom Inc. | In Service | Brampton |
| 323 | Distributel | In Service | Brampton |
| 325 | Bell Mobility | In Service | Brampton |
| 368 | IXICA Communications Inc. | In Service | Brampton |
| 401 | Iristel Inc. | In Service | Brampton |
| 406 | Zayo Canada Inc. | In Service | Brampton |
| 410 | Distributel | In Service | Brampton |
| 418 | TELUS Integrated Communications | In Service | Brampton |
| 498 | Fibernetics Corporation | In Service | Brampton |
| 499 | Fibernetics Corporation | In Service | Brampton |
| 505 | Fibernetics Corporation | In Service | Brampton |
| 541 | Bell Mobility | In Service | Brampton |
| 544 | Bell Mobility | In Service | Brampton |
| 569 | Comwave Networks | In Service | Brampton |
| 632 | Fibernetics Corporation | In Service | Brampton |
| 654 | TELUS Mobility | In Service | Brampton |
| 720 | Distributel | In Service | Brampton |
| 747 | Rogers Communications Canada Inc. (Cable) | In Service | Brampton |
| 748 | TELUS Integrated Communications | In Service | Brampton |
| 752 | Rogers Communications Canada Inc. (Cable) | In Service | Brampton |
| 764 | Zayo Canada Inc. | In Service | Brampton |
| 801 | Iristel Inc. | In Service | Brampton |
| 864 | Primus Telecommunications Canada Inc. | In Service | Brampton |
| 889 | Fido Solutions Inc. | In Service | Brampton |
| 900 | InnSysVoice Corp | In Service | Brampton |
| 901 | Iristel Inc. | In Service | Brampton |
| 946 | Freedom Mobile Inc. | In Service | Brampton |
| 948 | Distributel | In Service | Brampton |
| 227 | Fibernetics Corporation | In Service | Brooklin |
| 645 | Fibernetics Corporation | In Service | Brooklin |
| 704 | InnSysVoice Corp | In Service | Brooklin |
| 208 | Rogers Communications Canada Inc. (Wireless) | In Service | Burlington |
| 230 | TELUS Mobility | In Service | Burlington |
| 245 | TELUS Integrated Communications | In Service | Burlington |
| 266 | TELUS Integrated Communications | In Service | Burlington |
| 288 | Zayo Canada Inc. | In Service | Burlington |
| 293 | Zayo Canada Inc. | In Service | Burlington |
| 313 | Bell Canada | In Service | Burlington |
| 337 | TELUS Integrated Communications | In Service | Burlington |
| 348 | Distributel | In Service | Burlington |
| 419 | TELUS Integrated Communications | In Service | Burlington |
| 427 | ISP Telecom Inc. | In Service | Burlington |
| 598 | TELUS Mobility | In Service | Burlington |
| 635 | Fibernetics Corporation | In Service | Burlington |
| 636 | TELUS Integrated Communications | In Service | Burlington |
| 707 | Freedom Mobile Inc. | In Service | Burlington |
| 714 | Distributel | In Service | Burlington |
| 741 | InnSysVoice Corp | In Service | Burlington |
| 745 | Distributel | In Service | Burlington |
| 787 | Comwave Networks | In Service | Burlington |
| 798 | Distributel | In Service | Burlington |
| 812 | Iristel Inc. | In Service | Burlington |
| 816 | Iristel Inc. | In Service | Burlington |
| 828 | Fido Solutions Inc. | In Service | Burlington |
| 861 | Primus Telecommunications Canada Inc. | In Service | Burlington |
| 938 | TELUS Mobility | In Service | Burlington |
| 962 | Rogers Communications Canada Inc. (Wireless) | In Service | Burlington |
| 977 | Managed Network Systems Inc. | In Service | Burlington |
| 983 | Rogers Communications Canada Inc. (Wireless) | In Service | Burlington |
| 824 | TELUS Integrated Communications | In Service | Caledon East |
| 908 | InnSysVoice Corp | In Service | Caledon East |
| 961 | Comwave Networks | In Service | Caledon East |
| 966 | Fibernetics Corporation | In Service | Caledon East |
| 284 | Zayo Canada Inc. | In Service | Caledonia |
| 285 | Zayo Canada Inc. | In Service | Caledonia |
| 523 | Rogers Communications Canada Inc. (Cable) | In Service | Caledonia |
| 751 | InnSysVoice Corp | In Service | Caledonia |
| 757 | Rogers Communications Canada Inc. (Cable) | In Service | Caledonia |
| 960 | Comwave Networks | In Service | Caledonia |
| 458 | TELUS Integrated Communications | In Service | Campbellville |
| 630 | Fibernetics Corporation | In Service | Campbellville |
| 692 | InnSysVoice Corp | In Service | Campbellville |
| 324 | Distributel | In Service | Castlemore |
| 749 | Comwave Networks | In Service | Castlemore |
| 916 | InnSysVoice Corp | In Service | Castlemore |
| 370 | Zayo Canada Inc. | In Service | Cayuga |
| 516 | Rogers Communications Canada Inc. (Cable) | In Service | Cayuga |
| 603 | Comwave Networks | In Service | Cayuga |
| 736 | Rogers Communications Canada Inc. (Cable) | In Service | Cayuga |
| 462 | InnSysVoice Corp | In Service | Claremont |
| 299 | ISP Telecom Inc. | In Service | Clarkson |
| 326 | Distributel | In Service | Clarkson |
| 373 | Zayo Canada Inc. | In Service | Clarkson |
| 420 | TELUS Integrated Communications | In Service | Clarkson |
| 628 | Fibernetics Corporation | In Service | Clarkson |
| 727 | Distributel | In Service | Clarkson |
| 825 | TELUS Integrated Communications | In Service | Clarkson |
| 826 | TELUS Integrated Communications | In Service | Clarkson |
| 849 | Primus Telecommunications Canada Inc. | In Service | Clarkson |
| 898 | Fido Solutions Inc. | In Service | Clarkson |
| 945 | InnSysVoice Corp | In Service | Clarkson |
| 215 | Bell Mobility | In Service | Cobourg |
| 251 | Rogers Communications Canada Inc. (Wireless) | In Service | Cobourg |
| 252 | TELUS Integrated Communications | In Service | Cobourg |
| 435 | ISP Telecom Inc. | In Service | Cobourg |
| 677 | Iristel Inc. | In Service | Cobourg |
| 691 | TELUS Mobility | In Service | Cobourg |
| 771 | Rogers Communications Canada Inc. (Wireless) | In Service | Cobourg |
| 829 | Fido Solutions Inc. | In Service | Cobourg |
| 265 | TELUS Integrated Communications | In Service | Colborne |
| 232 | Rogers Communications Canada Inc. (Cable) | In Service | Cooksville |
| 261 | Bell Canada | In Service | Cooksville |
| 327 | Distributel | In Service | Cooksville |
| 360 | TELUS Integrated Communications | In Service | Cooksville |
| 374 | Zayo Canada Inc. | In Service | Cooksville |
| 421 | TELUS Integrated Communications | In Service | Cooksville |
| 444 | ISP Telecom Inc. | In Service | Cooksville |
| 454 | Zayo Canada Inc. | In Service | Cooksville |
| 497 | Fibernetics Corporation | In Service | Cooksville |
| 521 | Rogers Communications Canada Inc. (Cable) | In Service | Cooksville |
| 565 | Distributel | In Service | Cooksville |
| 633 | Fibernetics Corporation | In Service | Cooksville |
| 722 | Distributel | In Service | Cooksville |
| 724 | Iristel Inc. | In Service | Cooksville |
| 777 | TELUS Integrated Communications | In Service | Cooksville |
| 785 | Primus Telecommunications Canada Inc. | In Service | Cooksville |
| 805 | Iristel Inc. | In Service | Cooksville |
| 883 | Fido Solutions Inc. | In Service | Cooksville |
| 951 | InnSysVoice Corp | In Service | Cooksville |
| 238 | TELUS Integrated Communications | In Service | Dundas |
| 345 | Rogers Communications Canada Inc. (Cable) | In Service | Dundas |
| 446 | ISP Telecom Inc. | In Service | Dundas |
| 494 | Execulink Telecom Inc. | In Service | Dundas |
| 517 | Rogers Communications Canada Inc. (Cable) | In Service | Dundas |
| 737 | Rogers Communications Canada Inc. (Cable) | In Service | Dundas |
| 753 | InnSysVoice Corp | In Service | Dundas |
| 858 | Fibernetics Corporation | In Service | Dundas |
| 209 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 330 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 331 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 332 | Fido Solutions Inc. | In Service | Dunnville |
| 369 | Zayo Canada Inc. | In Service | Dunnville |
| 377 | Bell Mobility | In Service | Dunnville |
| 381 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 433 | Distributel | In Service | Dunnville |
| 518 | Rogers Communications Canada Inc. (Cable) | In Service | Dunnville |
| 604 | Comwave Networks | In Service | Dunnville |
| 738 | Rogers Communications Canada Inc. (Cable) | In Service | Dunnville |
| 761 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 972 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 973 | Rogers Communications Canada Inc. (Wireless) | In Service | Dunnville |
| 601 | Comwave Networks | In Service | Fisherville |
| 250 | TELUS Integrated Communications | In Service | Fort Erie |
| 303 | Bell Mobility | In Service | Fort Erie |
| 320 | TELUS Integrated Communications | In Service | Fort Erie |
| 321 | Rogers Communications Canada Inc. (Wireless) | In Service | Fort Erie |
| 322 | Fido Solutions Inc. | In Service | Fort Erie |
| 476 | ISP Telecom Inc. | In Service | Fort Erie |
| 599 | Fibernetics Corporation | In Service | Fort Erie |
| 762 | Rogers Communications Canada Inc. (Wireless) | In Service | Fort Erie |
| 609 | Fibernetics Corporation | In Service | Freelton |
| 679 | TELUS Integrated Communications | In Service | Freelton |
| 693 | InnSysVoice Corp | In Service | Freelton |
| 344 | Rogers Communications Canada Inc. (Cable) | In Service | Georgetown |
| 349 | Distributel | In Service | Georgetown |
| 428 | ISP Telecom Inc. | In Service | Georgetown |
| 642 | Fibernetics Corporation | In Service | Georgetown |
| 694 | InnSysVoice Corp | In Service | Georgetown |
| 790 | Comwave Networks | In Service | Georgetown |
| 839 | TELUS Mobility | In Service | Georgetown |
| 890 | Fido Solutions Inc. | In Service | Georgetown |
| 891 | TELUS Integrated Communications | In Service | Georgetown |
| 924 | Rogers Communications Canada Inc. (Wireless) | In Service | Georgetown |
| 935 | TELUS Mobility | In Service | Georgetown |
| 486 | InnSysVoice Corp | In Service | Gormley |
| 617 | Comwave Networks | In Service | Gormley |
| 746 | Rogers Communications Canada Inc. (Cable) | In Service | Gormley |
| 226 | Freedom Mobile Inc. | In Service | Grafton |
| 205 | Iristel Inc. | In Service | Grimsby |
| 235 | TELUS Integrated Communications | In Service | Grimsby |
| 336 | Distributel | In Service | Grimsby |
| 447 | ISP Telecom Inc. | In Service | Grimsby |
| 455 | TELUS Mobility | In Service | Grimsby |
| 493 | Execulink Telecom Inc. | In Service | Grimsby |
| 754 | InnSysVoice Corp | In Service | Grimsby |
| 770 | Comwave Networks | In Service | Grimsby |
| 797 | Iristel Inc. | In Service | Grimsby |
| 282 | Zayo Canada Inc. | In Service | Hagersville |
| 283 | Zayo Canada Inc. | In Service | Hagersville |
| 524 | Rogers Communications Canada Inc. (Cable) | In Service | Hagersville |
| 758 | Rogers Communications Canada Inc. (Cable) | In Service | Hagersville |
| 784 | InnSysVoice Corp | In Service | Hagersville |
| 237 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 244 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 246 | TELUS Integrated Communications | In Service | Hamilton |
| 253 | Bell Mobility | In Service | Hamilton |
| 260 | Bell Mobility | In Service | Hamilton |
| 263 | Distributel | In Service | Hamilton |
| 308 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 309 | Fibernetics Corporation | In Service | Hamilton |
| 335 | Distributel | In Service | Hamilton |
| 339 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 358 | TELUS Integrated Communications | In Service | Hamilton |
| 382 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 389 | TELUS Integrated Communications | In Service | Hamilton |
| 391 | TELUS Integrated Communications | In Service | Hamilton |
| 396 | TELUS Integrated Communications | In Service | Hamilton |
| 408 | Fibernetics Corporation | In Service | Hamilton |
| 426 | ISP Telecom Inc. | In Service | Hamilton |
| 439 | Bell Mobility | In Service | Hamilton |
| 440 | Bell Mobility | In Service | Hamilton |
| 441 | Bell Mobility | In Service | Hamilton |
| 442 | Bell Mobility | In Service | Hamilton |
| 456 | TELUS Mobility | In Service | Hamilton |
| 489 | Freedom Mobile Inc. | In Service | Hamilton |
| 492 | Execulink Telecom Inc. | In Service | Hamilton |
| 520 | Rogers Communications Canada Inc. (Cable) | In Service | Hamilton |
| 527 | Bell Mobility | In Service | Hamilton |
| 551 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 556 | Bell Mobility | In Service | Hamilton |
| 639 | Fibernetics Corporation | In Service | Hamilton |
| 659 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 667 | Zayo Canada Inc. | In Service | Hamilton |
| 674 | Rogers Communications Canada Inc. (Cable) | In Service | Hamilton |
| 678 | TELUS Integrated Communications | In Service | Hamilton |
| 680 | TELUS Mobility | In Service | Hamilton |
| 682 | TELUS Mobility | In Service | Hamilton |
| 683 | TELUS Mobility | In Service | Hamilton |
| 684 | TELUS Mobility | In Service | Hamilton |
| 689 | Freedom Mobile Inc. | In Service | Hamilton |
| 698 | TELUS Mobility | In Service | Hamilton |
| 700 | Freedom Mobile Inc. | In Service | Hamilton |
| 750 | InnSysVoice Corp | In Service | Hamilton |
| 755 | Rogers Communications Canada Inc. (Cable) | In Service | Hamilton |
| 766 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 768 | Iristel Inc. | In Service | Hamilton |
| 769 | Iristel Inc. | In Service | Hamilton |
| 773 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 774 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 775 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 776 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 778 | Iristel Inc. | In Service | Hamilton |
| 779 | Iristel Inc. | In Service | Hamilton |
| 780 | Iristel Inc. | In Service | Hamilton |
| 788 | Freedom Mobile Inc. | In Service | Hamilton |
| 799 | Iristel Inc. | In Service | Hamilton |
| 808 | TELUS Mobility | In Service | Hamilton |
| 827 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 860 | Comwave Networks | In Service | Hamilton |
| 877 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 880 | TELUS Mobility | In Service | Hamilton |
| 887 | Fido Solutions Inc. | In Service | Hamilton |
| 919 | Distributel | In Service | Hamilton |
| 920 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 921 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 922 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 925 | Rogers Communications Canada Inc. (Wireless) | In Service | Hamilton |
| 933 | TELUS Mobility | In Service | Hamilton |
| 941 | Freedom Mobile Inc. | In Service | Hamilton |
| 949 | Distributel | In Service | Hamilton |
| 975 | Distributel | In Service | Hamilton |
| 978 | Managed Network Systems Inc. | In Service | Hamilton |
| 994 | Freedom Mobile Inc. | In Service | Hamilton |
| 706 | InnSysVoice Corp | In Service | Hampton |
| 528 | InnSysVoice Corp | In Service | Keswick |
| 575 | Fibernetics Corporation | In Service | Keswick |
| 207 | Iristel Inc. | In Service | King City |
| 467 | ISP Telecom Inc. | In Service | King City |
| 530 | InnSysVoice Corp | In Service | King City |
| 572 | Fibernetics Corporation | In Service | King City |
| 618 | Comwave Networks | In Service | King City |
| 621 | Fibernetics Corporation | In Service | King City |
| 874 | TELUS Integrated Communications | In Service | King City |
| 907 | Iristel Inc. | In Service | King City |
| 202 | Rogers Communications Canada Inc. (Cable) | In Service | Kleinburg |
| 216 | Iristel Inc. | In Service | Kleinburg |
| 531 | InnSysVoice Corp | In Service | Kleinburg |
| 586 | Fibernetics Corporation | In Service | Kleinburg |
| 873 | TELUS Integrated Communications | In Service | Kleinburg |
| 247 | TELUS Integrated Communications | In Service | Malton |
| 328 | Distributel | In Service | Malton |
| 359 | TELUS Integrated Communications | In Service | Malton |
| 384 | Fibernetics Corporation | In Service | Malton |
| 548 | ISP Telecom Inc. | In Service | Malton |
| 562 | Bell Canada | In Service | Malton |
| 623 | Fido Solutions Inc. | In Service | Malton |
| 625 | Fibernetics Corporation | In Service | Malton |
| 721 | Distributel | In Service | Malton |
| 729 | Comwave Networks | In Service | Malton |
| 804 | Iristel Inc. | In Service | Malton |
| 865 | Primus Telecommunications Canada Inc. | In Service | Malton |
| 904 | Iristel Inc. | In Service | Malton |
| 944 | InnSysVoice Corp | In Service | Malton |
| 217 | Iristel Inc. | In Service | Maple |
| 304 | Bell Canada | In Service | Maple |
| 342 | Rogers Communications Canada Inc. (Cable) | In Service | Maple |
| 357 | TELUS Integrated Communications | In Service | Maple |
| 468 | ISP Telecom Inc. | In Service | Maple |
| 532 | InnSysVoice Corp | In Service | Maple |
| 553 | Rogers Communications Canada Inc. (Cable) | In Service | Maple |
| 583 | Fibernetics Corporation | In Service | Maple |
| 832 | Primus Telecommunications Canada Inc. | In Service | Maple |
| 917 | Iristel Inc. | In Service | Maple |
| 963 | Fibernetics Corporation | In Service | Maple |
| 301 | Iristel Inc. | In Service | Markham |
| 306 | Iristel Inc. | In Service | Markham |
| 307 | Iristel Inc. | In Service | Markham |
| 378 | Fibernetics Corporation | In Service | Markham |
| 451 | Zayo Canada Inc. | In Service | Markham |
| 469 | ISP Telecom Inc. | In Service | Markham |
| 507 | ExaTEL Inc. | In Service | Markham |
| 554 | Rogers Communications Canada Inc. (Cable) | In Service | Markham |
| 590 | Fibernetics Corporation | In Service | Markham |
| 661 | Comwave Networks | In Service | Markham |
| 666 | InnSysVoice Corp | In Service | Markham |
| 800 | Iristel Inc. | In Service | Markham |
| 818 | Fibernetics Corporation | In Service | Markham |
| 846 | Primus Telecommunications Canada Inc. | In Service | Markham |
| 859 | Fibernetics Corporation | In Service | Markham |
| 872 | TELUS Integrated Communications | In Service | Markham |
| 270 | Iristel Inc. | In Service | Milton |
| 350 | Distributel | In Service | Milton |
| 409 | Fibernetics Corporation | In Service | Milton |
| 412 | TELUS Integrated Communications | In Service | Milton |
| 429 | ISP Telecom Inc. | In Service | Milton |
| 627 | Fibernetics Corporation | In Service | Milton |
| 655 | InnSysVoice Corp | In Service | Milton |
| 670 | Iristel Inc. | In Service | Milton |
| 728 | Comwave Networks | In Service | Milton |
| 851 | Bell Canada | In Service | Milton |
| 862 | Primus Telecommunications Canada Inc. | In Service | Milton |
| 878 | TELUS Integrated Communications | In Service | Milton |
| 930 | TELUS Mobility | In Service | Milton |
| 971 | Rogers Communications Canada Inc. (Wireless) | In Service | Milton |
| 465 | ISP Telecom Inc. | In Service | Mount Albert |
| 534 | InnSysVoice Corp | In Service | Mount Albert |
| 662 | Comwave Networks | In Service | Mount Albert |
| 280 | Zayo Canada Inc. | In Service | Mount Hope |
| 281 | Zayo Canada Inc. | In Service | Mount Hope |
| 425 | ISP Telecom Inc. | In Service | Mount Hope |
| 491 | Execulink Telecom Inc. | In Service | Mount Hope |
| 525 | Rogers Communications Canada Inc. (Cable) | In Service | Mount Hope |
| 759 | Rogers Communications Canada Inc. (Cable) | In Service | Mount Hope |
| 791 | InnSysVoice Corp | In Service | Mount Hope |
| 866 | Fibernetics Corporation | In Service | Mount Hope |
| 629 | Fibernetics Corporation | In Service | Newcastle |
| 708 | InnSysVoice Corp | In Service | Newcastle |
| 231 | Rogers Communications Canada Inc. (Wireless) | In Service | Newmarket |
| 264 | Bell Mobility | In Service | Newmarket |
| 279 | TELUS Integrated Communications | In Service | Newmarket |
| 319 | Distributel | In Service | Newmarket |
| 338 | Rogers Communications Canada Inc. (Wireless) | In Service | Newmarket |
| 340 | Rogers Communications Canada Inc. (Cable) | In Service | Newmarket |
| 366 | Fibernetics Corporation | In Service | Newmarket |
| 383 | Bell Mobility | In Service | Newmarket |
| 395 | Fido Solutions Inc. | In Service | Newmarket |
| 453 | Zayo Canada Inc. | In Service | Newmarket |
| 470 | ISP Telecom Inc. | In Service | Newmarket |
| 500 | Freedom Mobile Inc. | In Service | Newmarket |
| 504 | ExaTEL Inc. | In Service | Newmarket |
| 535 | InnSysVoice Corp | In Service | Newmarket |
| 579 | Fibernetics Corporation | In Service | Newmarket |
| 663 | Comwave Networks | In Service | Newmarket |
| 716 | TELUS Mobility | In Service | Newmarket |
| 730 | Distributel | In Service | Newmarket |
| 763 | Rogers Communications Canada Inc. (Wireless) | In Service | Newmarket |
| 803 | Iristel Inc. | In Service | Newmarket |
| 841 | Primus Telecommunications Canada Inc. | In Service | Newmarket |
| 903 | Iristel Inc. | In Service | Newmarket |
| 909 | Freedom Mobile Inc. | In Service | Newmarket |
| 926 | Rogers Communications Canada Inc. (Wireless) | In Service | Newmarket |
| 934 | TELUS Mobility | In Service | Newmarket |
| 709 | InnSysVoice Corp | In Service | Newtonville |
| 964 | Comwave Networks | In Service | Newtonville |
| 248 | TELUS Integrated Communications | In Service | Niagara Falls |
| 257 | Bell Mobility | In Service | Niagara Falls |
| 271 | Iristel Inc. | In Service | Niagara Falls |
| 292 | Zayo Canada Inc. | In Service | Niagara Falls |
| 294 | Zayo Canada Inc. | In Service | Niagara Falls |
| 296 | TELUS Integrated Communications | In Service | Niagara Falls |
| 302 | Iristel Inc. | In Service | Niagara Falls |
| 341 | Rogers Communications Canada Inc. (Cable) | In Service | Niagara Falls |
| 361 | TELUS Integrated Communications | In Service | Niagara Falls |
| 402 | Iristel Inc. | In Service | Niagara Falls |
| 477 | ISP Telecom Inc. | In Service | Niagara Falls |
| 547 | Bell Mobility | In Service | Niagara Falls |
| 932 | Fibernetics Corporation | In Service | Niagara Falls |
| 272 | Iristel Inc. | In Service | Niagara-On-The-Lake |
| 413 | TELUS Integrated Communications | In Service | Niagara-On-The-Lake |
| 646 | Fibernetics Corporation | In Service | Niagara-On-The-Lake |
| 672 | Iristel Inc. | In Service | Niagara-On-The-Lake |
| 868 | TELUS Integrated Communications | In Service | Niagara-On-The-Lake |
| 463 | ISP Telecom Inc. | In Service | Nobleton |
| 542 | InnSysVoice Corp | In Service | Nobleton |
| 620 | Fibernetics Corporation | In Service | Nobleton |
| 658 | TELUS Integrated Communications | In Service | Nobleton |
| 664 | Comwave Networks | In Service | Nobleton |
| 210 | Iristel Inc. | In Service | Oak Ridges |
| 234 | Rogers Communications Canada Inc. (Cable) | In Service | Oak Ridges |
| 471 | ISP Telecom Inc. | In Service | Oak Ridges |
| 543 | InnSysVoice Corp | In Service | Oak Ridges |
| 573 | Fibernetics Corporation | In Service | Oak Ridges |
| 665 | Comwave Networks | In Service | Oak Ridges |
| 854 | TELUS Integrated Communications | In Service | Oak Ridges |
| 218 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 242 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 243 | Distributel | In Service | Oakville |
| 259 | Bell Mobility | In Service | Oakville |
| 291 | Zayo Canada Inc. | In Service | Oakville |
| 295 | Zayo Canada Inc. | In Service | Oakville |
| 300 | Freedom Mobile Inc. | In Service | Oakville |
| 351 | Distributel | In Service | Oakville |
| 363 | TELUS Integrated Communications | In Service | Oakville |
| 386 | Bell Canada | In Service | Oakville |
| 400 | Freedom Mobile Inc. | In Service | Oakville |
| 430 | ISP Telecom Inc. | In Service | Oakville |
| 529 | Distributel | In Service | Oakville |
| 644 | Fibernetics Corporation | In Service | Oakville |
| 681 | TELUS Mobility | In Service | Oakville |
| 715 | Distributel | In Service | Oakville |
| 725 | Bell Canada | In Service | Oakville |
| 740 | InnSysVoice Corp | In Service | Oakville |
| 772 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 795 | Bell Mobility | In Service | Oakville |
| 813 | Iristel Inc. | In Service | Oakville |
| 815 | Iristel Inc. | In Service | Oakville |
| 817 | Iristel Inc. | In Service | Oakville |
| 834 | Bell Mobility | In Service | Oakville |
| 835 | TELUS Integrated Communications | In Service | Oakville |
| 837 | TELUS Integrated Communications | In Service | Oakville |
| 838 | Bell Mobility | In Service | Oakville |
| 856 | Fibernetics Corporation | In Service | Oakville |
| 863 | Primus Telecommunications Canada Inc. | In Service | Oakville |
| 881 | TELUS Integrated Communications | In Service | Oakville |
| 885 | Fido Solutions Inc. | In Service | Oakville |
| 888 | Fido Solutions Inc. | In Service | Oakville |
| 910 | Comwave Networks | In Service | Oakville |
| 936 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 937 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 940 | Freedom Mobile Inc. | In Service | Oakville |
| 952 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 981 | Rogers Communications Canada Inc. (Wireless) | In Service | Oakville |
| 993 | TELUS Mobility | In Service | Oakville |
| 710 | InnSysVoice Corp | In Service | Orono |
| 222 | Fibernetics Corporation | In Service | Oshawa |
| 240 | Rogers Communications Canada Inc. (Cable) | In Service | Oshawa |
| 254 | TELUS Integrated Communications | In Service | Oshawa |
| 274 | Iristel Inc. | In Service | Oshawa |
| 312 | Iristel Inc. | In Service | Oshawa |
| 316 | Distributel | In Service | Oshawa |
| 355 | Bell Mobility | In Service | Oshawa |
| 356 | Bell Mobility | In Service | Oshawa |
| 367 | Iristel Inc. | In Service | Oshawa |
| 385 | Bell Mobility | In Service | Oshawa |
| 404 | Rogers Communications Canada Inc. (Wireless) | In Service | Oshawa |
| 405 | Bell Mobility | In Service | Oshawa |
| 481 | ISP Telecom Inc. | In Service | Oshawa |
| 512 | Iristel Inc. | In Service | Oshawa |
| 600 | Freedom Mobile Inc. | In Service | Oshawa |
| 634 | Fibernetics Corporation | In Service | Oshawa |
| 671 | Bell Mobility | In Service | Oshawa |
| 675 | TELUS Mobility | In Service | Oshawa |
| 676 | TELUS Integrated Communications | In Service | Oshawa |
| 685 | TELUS Mobility | In Service | Oshawa |
| 688 | TELUS Mobility | In Service | Oshawa |
| 701 | Distributel | In Service | Oshawa |
| 712 | InnSysVoice Corp | In Service | Oshawa |
| 731 | Distributel | In Service | Oshawa |
| 830 | Rogers Communications Canada Inc. (Wireless) | In Service | Oshawa |
| 869 | Comwave Networks | In Service | Oshawa |
| 886 | Fido Solutions Inc. | In Service | Oshawa |
| 918 | Distributel | In Service | Oshawa |
| 927 | Rogers Communications Canada Inc. (Wireless) | In Service | Oshawa |
| 928 | Rogers Communications Canada Inc. (Wireless) | In Service | Oshawa |
| 939 | TELUS Mobility | In Service | Oshawa |
| 943 | Freedom Mobile Inc. | In Service | Oshawa |
| 979 | Rogers Communications Canada Inc. (Wireless) | In Service | Oshawa |
| 991 | Freedom Mobile Inc. | In Service | Oshawa |
| 992 | Freedom Mobile Inc. | In Service | Oshawa |
| 996 | TELUS Mobility | In Service | Oshawa |
| 546 | InnSysVoice Corp | In Service | Palgrave |
| 587 | Fibernetics Corporation | In Service | Palgrave |
| 594 | Comwave Networks | In Service | Palgrave |
| 650 | Fibernetics Corporation | In Service | Pelham |
| 897 | TELUS Integrated Communications | In Service | Pelham |
| 478 | ISP Telecom Inc. | In Service | Port Colborne |
| 836 | TELUS Integrated Communications | In Service | Port Colborne |
| 297 | ISP Telecom Inc. | In Service | Port Credit |
| 329 | Distributel | In Service | Port Credit |
| 643 | Fibernetics Corporation | In Service | Port Credit |
| 822 | Fido Solutions Inc. | In Service | Port Credit |
| 847 | Primus Telecommunications Canada Inc. | In Service | Port Credit |
| 953 | InnSysVoice Corp | In Service | Port Credit |
| 436 | ISP Telecom Inc. | In Service | Port Hope |
| 519 | Freedom Mobile Inc. | In Service | Port Hope |
| 225 | Fibernetics Corporation | In Service | Port Perry |
| 354 | TELUS Mobility | In Service | Port Perry |
| 485 | ISP Telecom Inc. | In Service | Port Perry |
| 653 | Fibernetics Corporation | In Service | Port Perry |
| 713 | InnSysVoice Corp | In Service | Port Perry |
| 912 | Comwave Networks | In Service | Port Perry |
| 376 | TELUS Integrated Communications | In Service | Port Robinson |
| 549 | InnSysVoice Corp | In Service | Queensville |
| 580 | Fibernetics Corporation | In Service | Queensville |
| 269 | TELUS Integrated Communications | In Service | Richmond Hill |
| 317 | Distributel | In Service | Richmond Hill |
| 379 | Fibernetics Corporation | In Service | Richmond Hill |
| 399 | TELUS Integrated Communications | In Service | Richmond Hill |
| 452 | Zayo Canada Inc. | In Service | Richmond Hill |
| 475 | ISP Telecom Inc. | In Service | Richmond Hill |
| 496 | Distributel | In Service | Richmond Hill |
| 506 | ExaTEL Inc. | In Service | Richmond Hill |
| 537 | Rogers Communications Canada Inc. (Cable) | In Service | Richmond Hill |
| 538 | TELUS Integrated Communications | In Service | Richmond Hill |
| 550 | Distributel | In Service | Richmond Hill |
| 570 | Fibernetics Corporation | In Service | Richmond Hill |
| 637 | Fibernetics Corporation | In Service | Richmond Hill |
| 699 | InnSysVoice Corp | In Service | Richmond Hill |
| 809 | Iristel Inc. | In Service | Richmond Hill |
| 819 | Iristel Inc. | In Service | Richmond Hill |
| 833 | Fido Solutions Inc. | In Service | Richmond Hill |
| 842 | Primus Telecommunications Canada Inc. | In Service | Richmond Hill |
| 867 | Comwave Networks | In Service | Richmond Hill |
| 870 | Distributel | In Service | Richmond Hill |
| 947 | Freedom Mobile Inc. | In Service | Richmond Hill |
| 876 | TELUS Integrated Communications | In Service | Ridgeway |
| 318 | Distributel | In Service | Schomberg |
| 557 | InnSysVoice Corp | In Service | Schomberg |
| 574 | Fibernetics Corporation | In Service | Schomberg |
| 592 | Comwave Networks | In Service | Schomberg |
| 954 | InnSysVoice Corp | In Service | Snelgrove |
| 229 | Fibernetics Corporation | In Service | South Pickering |
| 277 | Iristel Inc. | In Service | South Pickering |
| 484 | ISP Telecom Inc. | In Service | South Pickering |
| 631 | Fibernetics Corporation | In Service | South Pickering |
| 734 | Distributel | In Service | South Pickering |
| 744 | InnSysVoice Corp | In Service | South Pickering |
| 882 | Fido Solutions Inc. | In Service | South Pickering |
| 915 | Comwave Networks | In Service | South Pickering |
| 986 | TELUS Integrated Communications | In Service | South Pickering |
| 213 | Bell Mobility | In Service | St. Catharines-Thorold |
| 214 | Bell Mobility | In Service | St. Catharines-Thorold |
| 219 | Bell Mobility | In Service | St. Catharines-Thorold |
| 228 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 241 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 267 | TELUS Integrated Communications | In Service | St. Catharines-Thorold |
| 273 | Iristel Inc. | In Service | St. Catharines-Thorold |
| 353 | IXICA Communications Inc. | In Service | St. Catharines-Thorold |
| 362 | TELUS Integrated Communications | In Service | St. Catharines-Thorold |
| 364 | TELUS Integrated Communications | In Service | St. Catharines-Thorold |
| 398 | TELUS Integrated Communications | In Service | St. Catharines-Thorold |
| 407 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 434 | Distributel | In Service | St. Catharines-Thorold |
| 438 | Fibernetics Corporation | In Service | St. Catharines-Thorold |
| 479 | ISP Telecom Inc. | In Service | St. Catharines-Thorold |
| 501 | Freedom Mobile Inc. | In Service | St. Catharines-Thorold |
| 606 | Comwave Networks | In Service | St. Catharines-Thorold |
| 668 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 669 | Fido Solutions Inc. | In Service | St. Catharines-Thorold |
| 686 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 687 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 690 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 696 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 697 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 723 | Iristel Inc. | In Service | St. Catharines-Thorold |
| 781 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 782 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 783 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 786 | Primus Telecommunications Canada Inc. | In Service | St. Catharines-Thorold |
| 929 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 931 | TELUS Mobility | In Service | St. Catharines-Thorold |
| 968 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 969 | Rogers Communications Canada Inc. (Wireless) | In Service | St. Catharines-Thorold |
| 974 | Distributel | In Service | St. Catharines-Thorold |
| 990 | Freedom Mobile Inc. | In Service | St. Catharines-Thorold |
| 397 | TELUS Integrated Communications | In Service | Stevensville |
| 203 | Iristel Inc. | In Service | Stoney Creek |
| 448 | ISP Telecom Inc. | In Service | Stoney Creek |
| 490 | Execulink Telecom Inc. | In Service | Stoney Creek |
| 526 | Rogers Communications Canada Inc. (Cable) | In Service | Stoney Creek |
| 760 | Rogers Communications Canada Inc. (Cable) | In Service | Stoney Creek |
| 765 | Zayo Canada Inc. | In Service | Stoney Creek |
| 792 | InnSysVoice Corp | In Service | Stoney Creek |
| 965 | Fibernetics Corporation | In Service | Stoney Creek |
| 212 | Iristel Inc. | In Service | Stouffville |
| 508 | ExaTEL Inc. | In Service | Stouffville |
| 558 | InnSysVoice Corp | In Service | Stouffville |
| 578 | Fibernetics Corporation | In Service | Stouffville |
| 612 | Fibernetics Corporation | In Service | Stouffville |
| 853 | TELUS Integrated Communications | In Service | Stouffville |
| 290 | Zayo Canada Inc. | In Service | Streetsville |
| 305 | Bell Canada | In Service | Streetsville |
| 334 | Distributel | In Service | Streetsville |
| 375 | TELUS Integrated Communications | In Service | Streetsville |
| 457 | Zayo Canada Inc. | In Service | Streetsville |
| 540 | Distributel | In Service | Streetsville |
| 652 | Fibernetics Corporation | In Service | Streetsville |
| 719 | Comwave Networks | In Service | Streetsville |
| 726 | Distributel | In Service | Streetsville |
| 814 | Iristel Inc. | In Service | Streetsville |
| 848 | Primus Telecommunications Canada Inc. | In Service | Streetsville |
| 896 | Fido Solutions Inc. | In Service | Streetsville |
| 914 | Iristel Inc. | In Service | Streetsville |
| 957 | InnSysVoice Corp | In Service | Streetsville |
| 997 | Rogers Communications Canada Inc. (Cable) | In Service | Streetsville |
| 998 | TELUS Integrated Communications | In Service | Streetsville |
| 999 | ISP Telecom Inc. | In Service | Streetsville |
| 559 | InnSysVoice Corp | In Service | Sutton |
| 576 | Fibernetics Corporation | In Service | Sutton |
| 871 | TELUS Integrated Communications | In Service | Sutton |
| 390 | TELUS Integrated Communications | In Service | Thornhill |
| 459 | Distributel | In Service | Thornhill |
| 472 | ISP Telecom Inc. | In Service | Thornhill |
| 502 | Zayo Canada Inc. | In Service | Thornhill |
| 510 | Distributel | In Service | Thornhill |
| 514 | Iristel Inc. | In Service | Thornhill |
| 561 | InnSysVoice Corp | In Service | Thornhill |
| 582 | Fibernetics Corporation | In Service | Thornhill |
| 588 | Fibernetics Corporation | In Service | Thornhill |
| 593 | Comwave Networks | In Service | Thornhill |
| 597 | Rogers Communications Canada Inc. (Cable) | In Service | Thornhill |
| 695 | Zayo Canada Inc. | In Service | Thornhill |
| 807 | Iristel Inc. | In Service | Thornhill |
| 843 | Primus Telecommunications Canada Inc. | In Service | Thornhill |
| 857 | Fibernetics Corporation | In Service | Thornhill |
| 982 | TELUS Integrated Communications | In Service | Thornhill |
| 850 | Fibernetics Corporation | In Service | Tottenham |
| 333 | Bell Canada | In Service | Unionville |
| 392 | TELUS Integrated Communications | In Service | Unionville |
| 473 | ISP Telecom Inc. | In Service | Unionville |
| 563 | InnSysVoice Corp | In Service | Unionville |
| 577 | Fibernetics Corporation | In Service | Unionville |
| 584 | Fibernetics Corporation | In Service | Unionville |
| 789 | TELUS Integrated Communications | In Service | Unionville |
| 806 | Iristel Inc. | In Service | Unionville |
| 844 | Primus Telecommunications Canada Inc. | In Service | Unionville |
| 884 | Fido Solutions Inc. | In Service | Unionville |
| 394 | Fido Solutions Inc. | In Service | Uxbridge |
| 564 | InnSysVoice Corp | In Service | Uxbridge |
| 581 | Fibernetics Corporation | In Service | Uxbridge |
| 595 | Comwave Networks | In Service | Uxbridge |
| 640 | Fibernetics Corporation | In Service | Uxbridge |
| 852 | ISP Telecom Inc. | In Service | Uxbridge |
| 955 | Fibernetics Corporation | In Service | Victoria |
| 967 | InnSysVoice Corp | In Service | Victoria |
| 567 | TELUS Integrated Communications | In Service | Vineland |
| 605 | Comwave Networks | In Service | Vineland |
| 352 | Distributel | In Service | Waterdown |
| 431 | ISP Telecom Inc. | In Service | Waterdown |
| 619 | Fibernetics Corporation | In Service | Waterdown |
| 718 | InnSysVoice Corp | In Service | Waterdown |
| 767 | Comwave Networks | In Service | Waterdown |
| 895 | TELUS Integrated Communications | In Service | Waterdown |
| 347 | Rogers Communications Canada Inc. (Cable) | In Service | Welland |
| 414 | TELUS Integrated Communications | In Service | Welland |
| 449 | Zayo Canada Inc. | In Service | Welland |
| 480 | ISP Telecom Inc. | In Service | Welland |
| 488 | Fibernetics Corporation | In Service | Welland |
| 673 | Rogers Communications Canada Inc. (Wireless) | In Service | Welland |
| 820 | TELUS Integrated Communications | In Service | Welland |
| 821 | Rogers Communications Canada Inc. (Wireless) | In Service | Welland |
| 823 | Fido Solutions Inc. | In Service | Welland |
| 607 | Comwave Networks | In Service | Wellandport |
| 560 | Comwave Networks | In Service | West Lincoln |
| 793 | InnSysVoice Corp | In Service | West Lincoln |
| 956 | TELUS Integrated Communications | In Service | West Lincoln |
| 220 | Fibernetics Corporation | In Service | Whitby |
| 278 | Iristel Inc. | In Service | Whitby |
| 483 | ISP Telecom Inc. | In Service | Whitby |
| 509 | Distributel | In Service | Whitby |
| 638 | Fibernetics Corporation | In Service | Whitby |
| 717 | InnSysVoice Corp | In Service | Whitby |
| 732 | Distributel | In Service | Whitby |
| 893 | Fido Solutions Inc. | In Service | Whitby |
| 985 | Iristel Inc. | In Service | Whitby |
| 989 | TELUS Integrated Communications | In Service | Whitby |
| 649 | Bell Canada | In Service | Winona |
| 656 | TELUS Integrated Communications | In Service | Winona |
| 794 | InnSysVoice Corp | In Service | Winona |
| 236 | Iristel Inc. | In Service | Woodbridge |
| 256 | TELUS Integrated Communications | In Service | Woodbridge |
| 268 | TELUS Integrated Communications | In Service | Woodbridge |
| 371 | Zayo Canada Inc. | In Service | Woodbridge |
| 393 | TELUS Integrated Communications | In Service | Woodbridge |
| 474 | ISP Telecom Inc. | In Service | Woodbridge |
| 536 | Iristel Inc. | In Service | Woodbridge |
| 589 | Fibernetics Corporation | In Service | Woodbridge |
| 596 | Comwave Networks | In Service | Woodbridge |
| 622 | Fibernetics Corporation | In Service | Woodbridge |
| 641 | InnSysVoice Corp | In Service | Woodbridge |
| 657 | Bell Canada | In Service | Woodbridge |
| 845 | Primus Telecommunications Canada Inc. | In Service | Woodbridge |
0.0% of the exchanges in this area code are still available.