| Eastern Ontario Area Code 343 Telephone Exchanges / Prefixes |
|---|
| Major Cities/Towns: Ottawa-Hull - Kingston - Cornwall - Belleville - Brockville |
|---|
| Prefix | Company | Status | Location |
|---|
| 210 | | Available | |
| 211 | | For Special Use | |
| 223 | | Available | |
| 224 | | Available | |
| 226 | | Available | |
| 227 | | Available | |
| 289 | | Not Available | |
| 294 | | Available | |
| 296 | | Available | |
| 310 | | Moratorium on Assignment | |
| 311 | | For Special Use | |
| 316 | | Available | |
| 318 | | Available | |
| 319 | | Available | |
| 321 | | Available | |
| 322 | | Available | |
| 324 | | Available | |
| 326 | | Available | |
| 328 | | Available | |
| 329 | | Available | |
| 332 | | Available | |
| 336 | | Available | |
| 337 | | Available | |
| 343 | | Not Available | |
| 354 | | Available | |
| 365 | | Not Available | |
| 403 | | Available | |
| 404 | | Available | |
| 406 | | Available | |
| 407 | | Available | |
| 408 | | Available | |
| 409 | | Available | |
| 410 | | Available | |
| 411 | | For Special Use | |
| 412 | | Available | |
| 413 | | Available | |
| 414 | | Available | |
| 415 | | Available | |
| 416 | | Available | |
| 418 | | Available | |
| 419 | | Available | |
| 420 | | Available | |
| 421 | | Available | |
| 423 | | Available | |
| 424 | | Available | |
| 425 | | Available | |
| 426 | | Available | |
| 427 | | Available | |
| 428 | | Available | |
| 450 | | Not Available | |
| 459 | | Available | |
| 460 | | Not Available | |
| 461 | | Available | |
| 462 | | Available | |
| 468 | | Not Available | |
| 469 | | Available | |
| 470 | | Available | |
| 484 | | Available | |
| 486 | | Available | |
| 487 | | Available | |
| 496 | | Available | |
| 497 | | Available | |
| 505 | | Available | |
| 506 | | Available | |
| 508 | | Available | |
| 509 | | Available | |
| 510 | | Available | |
| 511 | | For Special Use | |
| 512 | | Available | |
| 513 | | Available | |
| 514 | | Available | |
| 518 | | Available | |
| 554 | | Available | |
| 555 | | For Special Use | |
| 556 | | Available | |
| 557 | | Available | |
| 564 | | Available | |
| 565 | | Available | |
| 566 | | Available | |
| 568 | | Not Available | |
| 576 | | Available | |
| 579 | | Not Available | |
| 581 | | Available | |
| 582 | | Available | |
| 583 | | Available | |
| 584 | | Available | |
| 586 | | Available | |
| 587 | | Available | |
| 589 | | Available | |
| 590 | | Available | |
| 591 | | Available | |
| 592 | | Available | |
| 593 | | Available | |
| 594 | | Available | |
| 595 | | Available | |
| 596 | | Available | |
| 597 | | Available | |
| 598 | | Available | |
| 610 | | Moratorium on Assignment | |
| 611 | | For Special Use | |
| 612 | | Available | |
| 613 | | Not Available | |
| 614 | | Available | |
| 615 | | Available | |
| 616 | | Available | |
| 617 | | Available | |
| 620 | | Available | |
| 621 | | Available | |
| 624 | | Available | |
| 625 | | Available | |
| 626 | | Available | |
| 627 | | Available | |
| 628 | | Available | |
| 629 | | Available | |
| 630 | | Available | |
| 631 | | Available | |
| 632 | | Available | |
| 634 | | Available | |
| 635 | | Available | |
| 637 | | Available | |
| 646 | | Available | |
| 647 | | Available | |
| 648 | | Available | |
| 649 | | Available | |
| 650 | | Available | |
| 651 | | Available | |
| 652 | | Available | |
| 654 | | Available | |
| 656 | | Available | |
| 657 | | Available | |
| 658 | | Available | |
| 659 | | Available | |
| 660 | | Available | |
| 661 | | Available | |
| 662 | | Available | |
| 663 | | Available | |
| 664 | | Available | |
| 668 | | Available | |
| 669 | | Available | |
| 670 | | Available | |
| 671 | | Available | |
| 672 | | Available | |
| 673 | | Available | |
| 674 | | Available | |
| 675 | | Available | |
| 676 | | Available | |
| 678 | | Available | |
| 679 | | Available | |
| 680 | | Available | |
| 681 | | Available | |
| 682 | | Available | |
| 683 | | Available | |
| 684 | | Available | |
| 685 | | Available | |
| 687 | | Available | |
| 692 | | Available | |
| 693 | | Available | |
| 694 | | Available | |
| 695 | | Available | |
| 696 | | Available | |
| 697 | | Available | |
| 701 | | Available | |
| 702 | | Available | |
| 703 | | Available | |
| 704 | | Available | |
| 705 | | Available | |
| 706 | | Available | |
| 707 | | Available | |
| 708 | | Available | |
| 709 | | Available | |
| 710 | | Available | |
| 711 | | For Special Use | |
| 734 | | Available | |
| 735 | | Available | |
| 736 | | Available | |
| 738 | | Available | |
| 739 | | Available | |
| 740 | | Available | |
| 741 | | Available | |
| 742 | | Available | |
| 743 | | Available | |
| 745 | | Available | |
| 746 | | Available | |
| 753 | | Not Available | |
| 754 | | Available | |
| 756 | | Available | |
| 757 | | Available | |
| 758 | | Available | |
| 759 | | Available | |
| 782 | | Available | |
| 790 | | Available | |
| 791 | | Available | |
| 792 | | Available | |
| 793 | | Available | |
| 794 | | Available | |
| 795 | | Available | |
| 796 | | Available | |
| 797 | | Available | |
| 798 | | Available | |
| 802 | | Available | |
| 810 | | Moratorium on Assignment | |
| 811 | | For Special Use | |
| 812 | | Available | |
| 813 | | Available | |
| 814 | | Available | |
| 815 | | Available | |
| 816 | | Available | |
| 817 | | Available | |
| 818 | | Available | |
| 819 | | Not Available | |
| 820 | | Available | |
| 821 | | Available | |
| 823 | | Available | |
| 824 | | Available | |
| 825 | | Available | |
| 826 | | Available | |
| 827 | | Available | |
| 828 | | Available | |
| 829 | | Available | |
| 830 | | Available | |
| 831 | | Available | |
| 832 | | Available | |
| 834 | | Available | |
| 835 | | Available | |
| 836 | | Available | |
| 837 | | Available | |
| 838 | | Available | |
| 839 | | Available | |
| 840 | | Available | |
| 841 | | Available | |
| 842 | | Available | |
| 843 | | Available | |
| 845 | | Available | |
| 846 | | Available | |
| 847 | | Available | |
| 848 | | Available | |
| 849 | | Available | |
| 850 | | Available | |
| 851 | | Available | |
| 852 | | Available | |
| 853 | | Available | |
| 854 | | Available | |
| 856 | | Available | |
| 857 | | Available | |
| 858 | | Available | |
| 859 | | Available | |
| 860 | | Available | |
| 861 | | Available | |
| 862 | | Available | |
| 863 | | Available | |
| 864 | | Available | |
| 865 | | Available | |
| 866 | | Available | |
| 868 | | Available | |
| 869 | | Available | |
| 870 | | Available | |
| 871 | | Not Available | |
| 872 | | Available | |
| 873 | | Not Available | |
| 874 | | Available | |
| 875 | | Available | |
| 876 | | Available | |
| 878 | | Available | |
| 879 | | Available | |
| 901 | | Available | |
| 902 | | Available | |
| 903 | | Available | |
| 904 | | Available | |
| 905 | | Not Available | |
| 906 | | Available | |
| 907 | | Available | |
| 908 | | Available | |
| 909 | | Available | |
| 910 | | Available | |
| 911 | | For Special Use | |
| 912 | | Available | |
| 913 | | Available | |
| 914 | | Available | |
| 915 | | Available | |
| 916 | | Available | |
| 917 | | Available | |
| 918 | | Available | |
| 919 | | Available | |
| 920 | | Available | |
| 921 | | Available | |
| 923 | | Available | |
| 924 | | Available | |
| 926 | | Available | |
| 927 | | Available | |
| 928 | | Available | |
| 929 | | Available | |
| 930 | | Available | |
| 931 | | Available | |
| 932 | | Available | |
| 934 | | Available | |
| 935 | | Available | |
| 936 | | Available | |
| 938 | | Available | |
| 939 | | Available | |
| 940 | | Available | |
| 941 | | Available | |
| 942 | | Not Available | |
| 947 | | Available | |
| 948 | | Available | |
| 949 | | Available | |
| 950 | | For Special Use | |
| 951 | | Available | |
| 952 | | Available | |
| 953 | | Available | |
| 954 | | Available | |
| 955 | | Available | |
| 956 | | Available | |
| 957 | | Available | |
| 958 | | Plant Test | |
| 959 | | Plant Test | |
| 964 | | Available | |
| 965 | | Available | |
| 966 | | Available | |
| 967 | | Available | |
| 968 | | Available | |
| 969 | | Available | |
| 971 | | Available | |
| 972 | | Available | |
| 973 | | Available | |
| 974 | | Available | |
| 975 | | Available | |
| 976 | | For Special Use | |
| 977 | | Available | |
| 978 | | Available | |
| 979 | | Available | |
| 981 | | Available | |
| 985 | | Available | |
| 986 | | Available | |
| 990 | | Available | |
| 991 | | Available | |
| 992 | | Available | |
| 993 | | Available | |
| 994 | | Available | |
| 995 | | Available | |
| 290 | Allstream Inc. | In Service | Kingston |
| 291 | Allstream Inc. | In Service | Ottawa-Hull |
| 292 | Allstream Inc. | In Service | Ottawa-Hull |
| 203 | Bell Canada | In Service | Ottawa-Hull |
| 545 | Bell Canada | In Service | Kanata-Stittsville |
| 546 | Bell Canada | In Service | Gloucester |
| 547 | Bell Canada | In Service | Jockvale |
| 602 | Bell Canada | In Service | Ottawa-Hull |
| 603 | Bell Canada | In Service | Belleville |
| 604 | Bell Canada | In Service | Brockville |
| 605 | Bell Canada | In Service | Cornwall |
| 606 | Bell Canada | In Service | Hawkesbury |
| 607 | Bell Canada | In Service | Kingston |
| 608 | Bell Canada | In Service | Smiths Falls |
| 609 | Bell Canada | In Service | Pembroke |
| 618 | Bell Canada | In Service | Jockvale |
| 619 | Bell Canada | In Service | Ottawa-Hull |
| 698 | Bell Canada | In Service | Manotick |
| 285 | Bell Mobility | In Service | Carleton Place |
| 327 | Bell Mobility | In Service | Brockville |
| 422 | Bell Mobility | In Service | Kingston |
| 540 | Bell Mobility | In Service | Ottawa-Hull |
| 541 | Bell Mobility | In Service | Ottawa-Hull |
| 542 | Bell Mobility | In Service | Ottawa-Hull |
| 543 | Bell Mobility | In Service | Ottawa-Hull |
| 544 | Bell Mobility | In Service | Pembroke |
| 548 | Bell Mobility | In Service | Ottawa-Hull |
| 549 | Bell Mobility | In Service | Ottawa-Hull |
| 550 | Bell Mobility | In Service | Ottawa-Hull |
| 551 | Bell Mobility | In Service | Ottawa-Hull |
| 552 | Bell Mobility | In Service | Ottawa-Hull |
| 553 | Bell Mobility | In Service | Ottawa-Hull |
| 571 | Bell Mobility | In Service | Ottawa-Hull |
| 572 | Bell Mobility | In Service | Ottawa-Hull |
| 573 | Bell Mobility | In Service | Ottawa-Hull |
| 574 | Bell Mobility | In Service | Ottawa-Hull |
| 575 | Bell Mobility | In Service | Ottawa-Hull |
| 585 | Bell Mobility | In Service | Cornwall |
| 645 | Bell Mobility | In Service | Belleville |
| 431 | Bragg Communications Inc. | In Service | Cornwall |
| 265 | Comwave Networks | In Service | Deseronto |
| 266 | Comwave Networks | In Service | Kingston |
| 267 | Comwave Networks | In Service | Napanee |
| 268 | Comwave Networks | In Service | Arden |
| 269 | Comwave Networks | In Service | Bancroft |
| 270 | Comwave Networks | In Service | Belleville |
| 271 | Comwave Networks | In Service | Brighton |
| 272 | Comwave Networks | In Service | Northbrook |
| 273 | Comwave Networks | In Service | Plevna |
| 320 | Comwave Networks | In Service | Brockville |
| 330 | Comwave Networks | In Service | Cornwall |
| 331 | Comwave Networks | In Service | Vankleek Hill |
| 688 | Comwave Networks | In Service | Ottawa-Hull |
| 689 | Comwave Networks | In Service | Orleans |
| 690 | Comwave Networks | In Service | Kanata-Stittsville |
| 691 | Comwave Networks | In Service | Alfred |
| 205 | Distributel | In Service | Adolphustown |
| 206 | Distributel | In Service | Bath |
| 207 | Distributel | In Service | Enterprise |
| 208 | Distributel | In Service | Gananoque |
| 256 | Distributel | In Service | Crysler |
| 257 | Distributel | In Service | Merrickville |
| 258 | Distributel | In Service | Pakenham |
| 259 | Distributel | In Service | South Mountain |
| 274 | Distributel | In Service | Harrowsmith |
| 275 | Distributel | In Service | Inverary |
| 276 | Distributel | In Service | Napanee |
| 277 | Distributel | In Service | Newburgh |
| 278 | Distributel | In Service | Odessa |
| 279 | Distributel | In Service | Seeleys Bay |
| 280 | Distributel | In Service | Selby |
| 281 | Distributel | In Service | Sydenham |
| 282 | Distributel | In Service | Tamworth |
| 283 | Distributel | In Service | Verona |
| 284 | Distributel | In Service | Wolfe Island |
| 286 | Distributel | In Service | Yarker |
| 287 | Distributel | In Service | Deseronto |
| 317 | Distributel | In Service | Ottawa-Hull |
| 344 | Distributel | In Service | Kingston |
| 417 | Distributel | In Service | Ottawa-Hull |
| 760 | Distributel | In Service | Almonte |
| 761 | Distributel | In Service | Arnprior |
| 762 | Distributel | In Service | Bourget |
| 763 | Distributel | In Service | Carleton Place |
| 764 | Distributel | In Service | Carp |
| 765 | Distributel | In Service | Casselman |
| 766 | Distributel | In Service | Chesterville |
| 767 | Distributel | In Service | Clarence Creek |
| 768 | Distributel | In Service | Constance Bay |
| 769 | Distributel | In Service | Cumberland |
| 770 | Distributel | In Service | Embrun |
| 771 | Distributel | In Service | Gloucester |
| 772 | Distributel | In Service | Jockvale |
| 773 | Distributel | In Service | Kanata-Stittsville |
| 774 | Distributel | In Service | Kemptville |
| 775 | Distributel | In Service | Manotick |
| 776 | Distributel | In Service | Metcalfe |
| 778 | Distributel | In Service | Navan |
| 779 | Distributel | In Service | North Gower |
| 780 | Distributel | In Service | Orleans |
| 781 | Distributel | In Service | Osgoode |
| 783 | Distributel | In Service | Plantagenet |
| 784 | Distributel | In Service | Richmond |
| 785 | Distributel | In Service | Rockland |
| 786 | Distributel | In Service | Russell |
| 787 | Distributel | In Service | Winchester |
| 789 | Distributel | In Service | Alfred |
| 888 | Distributel | In Service | Ottawa-Hull |
| 925 | Distributel | In Service | Ottawa-Hull |
| 244 | ExaTEL Inc. | In Service | Ottawa-Hull |
| 622 | ExaTEL Inc. | In Service | Deep River |
| 623 | ExaTEL Inc. | In Service | Chalk River |
| 293 | Fibernetics Corporation | In Service | Kingston |
| 347 | Fibernetics Corporation | In Service | Arnprior |
| 348 | Fibernetics Corporation | In Service | Cumberland |
| 349 | Fibernetics Corporation | In Service | Gloucester |
| 350 | Fibernetics Corporation | In Service | Orleans |
| 351 | Fibernetics Corporation | In Service | Richmond |
| 454 | Fibernetics Corporation | In Service | Alfred |
| 455 | Fibernetics Corporation | In Service | Clarence Creek |
| 456 | Fibernetics Corporation | In Service | Embrun |
| 457 | Fibernetics Corporation | In Service | Plantagenet |
| 458 | Fibernetics Corporation | In Service | Rockland |
| 464 | Fibernetics Corporation | In Service | Almonte |
| 465 | Fibernetics Corporation | In Service | Jockvale |
| 466 | Fibernetics Corporation | In Service | North Gower |
| 467 | Fibernetics Corporation | In Service | Osgoode |
| 491 | Fibernetics Corporation | In Service | Carp |
| 492 | Fibernetics Corporation | In Service | Constance Bay |
| 493 | Fibernetics Corporation | In Service | Pakenham |
| 638 | Fibernetics Corporation | In Service | Frankford |
| 639 | Fibernetics Corporation | In Service | Marmora |
| 640 | Fibernetics Corporation | In Service | Plevna |
| 641 | Fibernetics Corporation | In Service | Stirling |
| 642 | Fibernetics Corporation | In Service | Tweed |
| 643 | Fibernetics Corporation | In Service | Brockville |
| 881 | Fibernetics Corporation | In Service | Smiths Falls |
| 882 | Fibernetics Corporation | In Service | Ottawa-Hull |
| 883 | Fibernetics Corporation | In Service | Ottawa-Hull |
| 884 | Fibernetics Corporation | In Service | Kingston |
| 885 | Fibernetics Corporation | In Service | Cornwall |
| 886 | Fibernetics Corporation | In Service | Vankleek Hill |
| 887 | Fibernetics Corporation | In Service | Ottawa-Hull |
| 892 | Fibernetics Corporation | In Service | Bath |
| 893 | Fibernetics Corporation | In Service | Napanee |
| 894 | Fibernetics Corporation | In Service | Sydenham |
| 895 | Fibernetics Corporation | In Service | Casselman |
| 896 | Fibernetics Corporation | In Service | Merrickville |
| 897 | Fibernetics Corporation | In Service | Russell |
| 898 | Fibernetics Corporation | In Service | Winchester |
| 558 | Fido Solutions Inc. | In Service | Ottawa-Hull |
| 777 | Fido Solutions Inc. | In Service | Ottawa-Hull |
| 889 | Fido Solutions Inc. | In Service | Belleville |
| 987 | Fido Solutions Inc. | In Service | Ottawa-Hull |
| 988 | Fido Solutions Inc. | In Service | Ottawa-Hull |
| 989 | Fido Solutions Inc. | In Service | Kingston |
| 254 | Freedom Mobile Inc. | In Service | Ottawa-Hull |
| 295 | Freedom Mobile Inc. | In Service | Napanee |
| 297 | Freedom Mobile Inc. | In Service | Ottawa-Hull |
| 315 | Freedom Mobile Inc. | In Service | Brighton |
| 325 | Freedom Mobile Inc. | In Service | Trenton |
| 333 | Freedom Mobile Inc. | In Service | Kingston |
| 335 | Freedom Mobile Inc. | In Service | Prescott |
| 367 | Freedom Mobile Inc. | In Service | Belleville |
| 405 | Freedom Mobile Inc. | In Service | Morrisburg |
| 507 | Freedom Mobile Inc. | In Service | Brockville |
| 567 | Freedom Mobile Inc. | In Service | Pembroke |
| 580 | Freedom Mobile Inc. | In Service | Kingston |
| 636 | Freedom Mobile Inc. | In Service | Ingleside |
| 665 | Freedom Mobile Inc. | In Service | Ottawa-Hull |
| 737 | Freedom Mobile Inc. | In Service | St-Regis |
| 867 | Freedom Mobile Inc. | In Service | Cornwall |
| 970 | Freedom Mobile Inc. | In Service | Cobden |
| 980 | Freedom Mobile Inc. | In Service | Petawawa |
| 298 | ISP Telecom | Assigned | Alfred |
| 352 | ISP Telecom | Assigned | Cardinal |
| 471 | ISP Telecom | In Service | Tweed |
| 472 | ISP Telecom | In Service | Madoc |
| 473 | ISP Telecom | In Service | Vankleek Hill |
| 474 | ISP Telecom | In Service | Alexandria |
| 475 | ISP Telecom | In Service | Cornwall |
| 476 | ISP Telecom | In Service | Bancroft |
| 477 | ISP Telecom | In Service | Kingston |
| 478 | ISP Telecom | In Service | Napanee |
| 479 | ISP Telecom | In Service | Gananoque |
| 480 | ISP Telecom | In Service | Brockville |
| 481 | ISP Telecom | In Service | Iroquois |
| 482 | ISP Telecom | In Service | Williamsburg |
| 483 | ISP Telecom | In Service | Morrisburg |
| 515 | ISP Telecom | In Service | Arnprior |
| 516 | ISP Telecom | In Service | Carp |
| 517 | ISP Telecom | In Service | Constance Bay |
| 519 | ISP Telecom | In Service | Kemptville |
| 559 | ISP Telecom | In Service | Arden |
| 560 | ISP Telecom | In Service | Bloomfield |
| 561 | ISP Telecom | In Service | Cardiff |
| 562 | ISP Telecom | In Service | Picton |
| 569 | ISP Telecom | Assigned | Enterprise |
| 570 | ISP Telecom | Assigned | Odessa |
| 577 | ISP Telecom | In Service | Bath |
| 578 | ISP Telecom | In Service | Harrowsmith |
| 890 | ISP Telecom | In Service | Almonte |
| 891 | ISP Telecom | In Service | Casselman |
| 299 | IXICA Communications Inc. | In Service | Cumberland |
| 334 | IXICA Communications Inc. | In Service | Kemptville |
| 485 | IXICA Communications Inc. | In Service | Merrickville |
| 489 | IXICA Communications Inc. | In Service | Orleans |
| 494 | IXICA Communications Inc. | In Service | Richmond |
| 495 | IXICA Communications Inc. | In Service | Rockland |
| 498 | IXICA Communications Inc. | In Service | Winchester |
| 499 | IXICA Communications Inc. | In Service | Kanata-Stittsville |
| 563 | IXICA Communications Inc. | In Service | Casselman |
| 599 | IXICA Communications Inc. | In Service | Ottawa-Hull |
| 799 | IXICA Communications Inc. | In Service | Metcalfe |
| 899 | IXICA Communications Inc. | In Service | Carleton Place |
| 255 | InnSysVoice Corp | In Service | Frankford |
| 432 | InnSysVoice Corp | In Service | Alexandria |
| 433 | InnSysVoice Corp | In Service | Avonmore |
| 434 | InnSysVoice Corp | In Service | Finch |
| 435 | InnSysVoice Corp | In Service | Glen Robertson |
| 436 | InnSysVoice Corp | In Service | Ingleside |
| 437 | InnSysVoice Corp | In Service | Iroquois |
| 438 | InnSysVoice Corp | In Service | LOrignal |
| 439 | InnSysVoice Corp | In Service | Lancaster |
| 440 | InnSysVoice Corp | In Service | Long Sault |
| 441 | InnSysVoice Corp | In Service | Martintown |
| 442 | InnSysVoice Corp | In Service | Maxville |
| 443 | InnSysVoice Corp | In Service | Morrisburg |
| 444 | InnSysVoice Corp | In Service | Cornwall |
| 445 | InnSysVoice Corp | In Service | St. Eugene |
| 446 | InnSysVoice Corp | In Service | St. Isidore |
| 447 | InnSysVoice Corp | In Service | St-Regis |
| 448 | InnSysVoice Corp | In Service | Vankleek Hill |
| 449 | InnSysVoice Corp | In Service | Williamsburg |
| 666 | InnSysVoice Corp | In Service | Ottawa-Hull |
| 667 | InnSysVoice Corp | In Service | Kanata-Stittsville |
| 677 | InnSysVoice Corp | In Service | Wellington |
| 699 | InnSysVoice Corp | In Service | Trenton |
| 744 | InnSysVoice Corp | In Service | Bloomfield |
| 755 | InnSysVoice Corp | In Service | Bancroft |
| 788 | InnSysVoice Corp | In Service | Belleville |
| 822 | InnSysVoice Corp | In Service | Deseronto |
| 833 | InnSysVoice Corp | In Service | Gananoque |
| 844 | InnSysVoice Corp | In Service | Adolphustown |
| 855 | InnSysVoice Corp | In Service | Bath |
| 900 | InnSysVoice Corp | In Service | Kingston |
| 922 | InnSysVoice Corp | In Service | Wolfe Island |
| 933 | InnSysVoice Corp | In Service | Brighton |
| 300 | Iristel Inc. | In Service | Brockville |
| 301 | Iristel Inc. | In Service | Cornwall |
| 302 | Iristel Inc. | In Service | Kingston |
| 303 | Iristel Inc. | In Service | Jockvale |
| 304 | Iristel Inc. | In Service | Vankleek Hill |
| 305 | Iristel Inc. | In Service | Kingston |
| 306 | Iristel Inc. | In Service | Kingston |
| 307 | Iristel Inc. | In Service | Brockville |
| 308 | Iristel Inc. | In Service | Kanata-Stittsville |
| 309 | Iristel Inc. | In Service | Cornwall |
| 312 | Iristel Inc. | In Service | Jockvale |
| 313 | Iristel Inc. | In Service | Jockvale |
| 314 | Iristel Inc. | In Service | Cornwall |
| 338 | Iristel Inc. | In Service | Merrickville |
| 339 | Iristel Inc. | In Service | Merrickville |
| 340 | Iristel Inc. | In Service | Merrickville |
| 341 | Iristel Inc. | In Service | Perth |
| 342 | Iristel Inc. | In Service | Vankleek Hill |
| 353 | Iristel Inc. | In Service | Kanata-Stittsville |
| 429 | Iristel Inc. | In Service | Carleton Place |
| 430 | Iristel Inc. | In Service | Carleton Place |
| 453 | Iristel Inc. | In Service | Belleville |
| 500 | Iristel Inc. | In Service | Hawkesbury |
| 501 | Iristel Inc. | In Service | Brockville |
| 502 | Iristel Inc. | In Service | Ottawa-Hull |
| 503 | Iristel Inc. | In Service | Carleton Place |
| 504 | Iristel Inc. | In Service | Brockville |
| 600 | Iristel Inc. | In Service | Belleville |
| 601 | Iristel Inc. | In Service | Belleville |
| 633 | Iristel Inc. | In Service | Ottawa-Hull |
| 644 | Iristel Inc. | In Service | Ottawa-Hull |
| 655 | Iristel Inc. | In Service | Ottawa-Hull |
| 700 | Iristel Inc. | In Service | Ottawa-Hull |
| 800 | Iristel Inc. | In Service | Smiths Falls |
| 801 | Iristel Inc. | In Service | Smiths Falls |
| 803 | Iristel Inc. | In Service | Ottawa-Hull |
| 804 | Iristel Inc. | In Service | Ottawa-Hull |
| 805 | Iristel Inc. | In Service | Ottawa-Hull |
| 806 | Iristel Inc. | In Service | Ottawa-Hull |
| 807 | Iristel Inc. | In Service | Ottawa-Hull |
| 808 | Iristel Inc. | In Service | Ottawa-Hull |
| 809 | Iristel Inc. | In Service | Ottawa-Hull |
| 943 | Iristel Inc. | In Service | Bancroft |
| 944 | Iristel Inc. | In Service | Bancroft |
| 945 | Iristel Inc. | In Service | Bancroft |
| 946 | Iristel Inc. | In Service | Bancroft |
| 712 | Nexicom Telecommunications Inc | In Service | Arden |
| 713 | Nexicom Telecommunications Inc | In Service | Bloomfield |
| 714 | Nexicom Telecommunications Inc | In Service | Brighton |
| 715 | Nexicom Telecommunications Inc | In Service | Cardiff |
| 716 | Nexicom Telecommunications Inc | In Service | Coe Hill |
| 717 | Nexicom Telecommunications Inc | In Service | Denbigh |
| 718 | Nexicom Telecommunications Inc | In Service | Frankford |
| 719 | Nexicom Telecommunications Inc | In Service | Gilmour |
| 720 | Nexicom Telecommunications Inc | In Service | Bancroft |
| 721 | Nexicom Telecommunications Inc | In Service | Madoc |
| 722 | Nexicom Telecommunications Inc | In Service | Marmora |
| 723 | Nexicom Telecommunications Inc | In Service | Maynooth |
| 724 | Nexicom Telecommunications Inc | In Service | Northbrook |
| 725 | Nexicom Telecommunications Inc | In Service | Picton |
| 726 | Nexicom Telecommunications Inc | In Service | Plevna |
| 727 | Nexicom Telecommunications Inc | In Service | Stirling |
| 728 | Nexicom Telecommunications Inc | In Service | Thurlow |
| 729 | Nexicom Telecommunications Inc | In Service | Trenton |
| 730 | Nexicom Telecommunications Inc | In Service | Belleville |
| 731 | Nexicom Telecommunications Inc | In Service | Tweed |
| 732 | Nexicom Telecommunications Inc | In Service | Wellington |
| 733 | Nexicom Telecommunications Inc | In Service | Wooler |
| 488 | Primus Telecommunications Canada Inc. | In Service | Ottawa-Hull |
| 490 | Primus Telecommunications Canada Inc. | In Service | Kanata-Stittsville |
| 221 | Rogers Communications Canada Inc. (Cable) | In Service | Orleans |
| 877 | Rogers Communications Canada Inc. (Cable) | Assigned | Kemptville |
| 880 | Rogers Communications Canada Inc. (Cable) | In Service | Orleans |
| 982 | Rogers Communications Canada Inc. (Cable) | In Service | Brockville |
| 983 | Rogers Communications Canada Inc. (Cable) | In Service | Cornwall |
| 984 | Rogers Communications Canada Inc. (Cable) | In Service | Ottawa-Hull |
| 400 | Rogers Communications Canada Inc. (Wireless) | In Service | Perth |
| 401 | Rogers Communications Canada Inc. (Wireless) | In Service | Bancroft |
| 402 | Rogers Communications Canada Inc. (Wireless) | In Service | Perth |
| 960 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 961 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 962 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 963 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 996 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 997 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 998 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 999 | Rogers Communications Canada Inc. (Wireless) | In Service | Ottawa-Hull |
| 588 | Rogers Communications Canada Inc. | In Service | Ottawa-Hull |
| 288 | Roxborough Telephone Company Ltd. | In Service | Cornwall |
| 212 | TELUS Integrated Communications | In Service | Jockvale |
| 213 | TELUS Integrated Communications | In Service | Carleton Place |
| 214 | TELUS Integrated Communications | In Service | Manotick |
| 215 | TELUS Integrated Communications | In Service | Hawkesbury |
| 216 | TELUS Integrated Communications | In Service | Sydenham |
| 217 | TELUS Integrated Communications | In Service | Tamworth |
| 218 | TELUS Integrated Communications | In Service | Elgin |
| 219 | TELUS Integrated Communications | In Service | Lanark |
| 220 | TELUS Integrated Communications | In Service | Portland |
| 222 | TELUS Integrated Communications | In Service | Picton |
| 225 | TELUS Integrated Communications | In Service | Brockville |
| 228 | TELUS Integrated Communications | In Service | Denbigh |
| 229 | TELUS Integrated Communications | In Service | Madoc |
| 230 | TELUS Integrated Communications | In Service | Marmora |
| 231 | TELUS Integrated Communications | In Service | Maynooth |
| 232 | TELUS Integrated Communications | In Service | Northbrook |
| 233 | TELUS Integrated Communications | In Service | Plevna |
| 234 | TELUS Integrated Communications | In Service | Tweed |
| 235 | TELUS Integrated Communications | In Service | Alexandria |
| 236 | TELUS Integrated Communications | In Service | Iroquois |
| 237 | TELUS Integrated Communications | In Service | Maxville |
| 238 | TELUS Integrated Communications | In Service | Morrisburg |
| 239 | TELUS Integrated Communications | In Service | St. Isidore |
| 240 | TELUS Integrated Communications | In Service | Carp |
| 241 | TELUS Integrated Communications | In Service | Barrys Bay |
| 242 | TELUS Integrated Communications | In Service | Calabogie |
| 243 | TELUS Integrated Communications | In Service | Cobden |
| 245 | TELUS Integrated Communications | In Service | Deep River |
| 246 | TELUS Integrated Communications | In Service | Eganville |
| 247 | TELUS Integrated Communications | In Service | Killaloe |
| 248 | TELUS Integrated Communications | In Service | Whitney |
| 249 | TELUS Integrated Communications | In Service | Athens |
| 250 | TELUS Integrated Communications | In Service | Cardinal |
| 251 | TELUS Integrated Communications | In Service | Delta |
| 252 | TELUS Integrated Communications | In Service | Seeleys Bay |
| 253 | TELUS Integrated Communications | In Service | Coe Hill |
| 323 | TELUS Integrated Communications | In Service | Kingston |
| 355 | TELUS Integrated Communications | In Service | Belleville |
| 356 | TELUS Integrated Communications | In Service | Cornwall |
| 357 | TELUS Integrated Communications | In Service | Bancroft |
| 358 | TELUS Integrated Communications | In Service | Kingston |
| 359 | TELUS Integrated Communications | In Service | Kanata-Stittsville |
| 360 | TELUS Integrated Communications | In Service | Ottawa-Hull |
| 361 | TELUS Integrated Communications | In Service | Renfrew |
| 362 | TELUS Integrated Communications | In Service | Belleville |
| 451 | TELUS Integrated Communications | In Service | Ottawa-Hull |
| 452 | TELUS Integrated Communications | In Service | Ottawa-Hull |
| 520 | TELUS Integrated Communications | In Service | Alfred |
| 521 | TELUS Integrated Communications | In Service | Almonte |
| 522 | TELUS Integrated Communications | In Service | Bourget |
| 523 | TELUS Integrated Communications | In Service | Casselman |
| 524 | TELUS Integrated Communications | In Service | Chesterville |
| 525 | TELUS Integrated Communications | In Service | Embrun |
| 526 | TELUS Integrated Communications | In Service | Gloucester |
| 527 | TELUS Integrated Communications | In Service | Merrickville |
| 528 | TELUS Integrated Communications | In Service | Orleans |
| 529 | TELUS Integrated Communications | In Service | Plantagenet |
| 530 | TELUS Integrated Communications | In Service | Richmond |
| 531 | TELUS Integrated Communications | In Service | Rockland |
| 532 | TELUS Integrated Communications | In Service | Winchester |
| 533 | TELUS Integrated Communications | In Service | Clarence Creek |
| 534 | TELUS Integrated Communications | In Service | Crysler |
| 535 | TELUS Integrated Communications | In Service | Cumberland |
| 536 | TELUS Integrated Communications | In Service | Navan |
| 537 | TELUS Integrated Communications | In Service | Pakenham |
| 538 | TELUS Integrated Communications | In Service | Russell |
| 539 | TELUS Integrated Communications | In Service | South Mountain |
| 686 | TELUS Integrated Communications | In Service | Ottawa-Hull |
| 747 | TELUS Integrated Communications | In Service | LOrignal |
| 748 | TELUS Integrated Communications | In Service | Vankleek Hill |
| 749 | TELUS Integrated Communications | In Service | Wellington |
| 750 | TELUS Integrated Communications | In Service | Stirling |
| 751 | TELUS Integrated Communications | In Service | Frankford |
| 752 | TELUS Integrated Communications | In Service | Bloomfield |
| 937 | TELUS Integrated Communications | In Service | Cornwall |
| 260 | TELUS Mobility | In Service | Brockville |
| 261 | TELUS Mobility | In Service | Belleville |
| 262 | TELUS Mobility | In Service | Ottawa-Hull |
| 263 | TELUS Mobility | In Service | Belleville |
| 264 | TELUS Mobility | In Service | Brockville |
| 363 | TELUS Mobility | In Service | Kingston |
| 364 | TELUS Mobility | In Service | Kingston |
| 366 | TELUS Mobility | In Service | Kingston |
| 368 | TELUS Mobility | In Service | Ottawa-Hull |
| 369 | TELUS Mobility | In Service | Pembroke |
| 370 | TELUS Mobility | In Service | Cornwall |
| 463 | TELUS Mobility | In Service | Ottawa-Hull |
| 345 | TekSavvy Solutions Inc | In Service | South Mountain |
| 346 | TekSavvy Solutions Inc | In Service | Winchester |
| 371 | TekSavvy Solutions Inc | In Service | Alfred |
| 372 | TekSavvy Solutions Inc | In Service | Almonte |
| 373 | TekSavvy Solutions Inc | In Service | Arnprior |
| 374 | TekSavvy Solutions Inc | In Service | Bourget |
| 375 | TekSavvy Solutions Inc | In Service | Carleton Place |
| 376 | TekSavvy Solutions Inc | In Service | Carp |
| 377 | TekSavvy Solutions Inc | In Service | Casselman |
| 378 | TekSavvy Solutions Inc | In Service | Chesterville |
| 379 | TekSavvy Solutions Inc | In Service | Clarence Creek |
| 380 | TekSavvy Solutions Inc | In Service | Constance Bay |
| 381 | TekSavvy Solutions Inc | In Service | Crysler |
| 382 | TekSavvy Solutions Inc | In Service | Cumberland |
| 383 | TekSavvy Solutions Inc | In Service | Embrun |
| 384 | TekSavvy Solutions Inc | In Service | Gloucester |
| 385 | TekSavvy Solutions Inc | In Service | Jockvale |
| 386 | TekSavvy Solutions Inc | In Service | Kanata-Stittsville |
| 387 | TekSavvy Solutions Inc | In Service | Kemptville |
| 388 | TekSavvy Solutions Inc | In Service | Manotick |
| 389 | TekSavvy Solutions Inc | In Service | Merrickville |
| 390 | TekSavvy Solutions Inc | In Service | Metcalfe |
| 391 | TekSavvy Solutions Inc | In Service | Navan |
| 392 | TekSavvy Solutions Inc | In Service | North Gower |
| 393 | TekSavvy Solutions Inc | In Service | Orleans |
| 394 | TekSavvy Solutions Inc | In Service | Osgoode |
| 395 | TekSavvy Solutions Inc | In Service | Pakenham |
| 396 | TekSavvy Solutions Inc | In Service | Plantagenet |
| 397 | TekSavvy Solutions Inc | In Service | Richmond |
| 398 | TekSavvy Solutions Inc | In Service | Rockland |
| 399 | TekSavvy Solutions Inc | In Service | Russell |
| 200 | Videotron Ltd. | In Service | Rockland |
| 201 | Videotron Ltd. | In Service | Alfred |
| 202 | Videotron Ltd. | In Service | Ottawa-Hull |
| 204 | Videotron Ltd. | In Service | Ottawa-Hull |
| 209 | Videotron Ltd. | Assigned | Ottawa-Hull |
| 653 | Westport Telephone Company Limited | Assigned | Elgin |
38.5% of the exchanges in this area code are still available.