| Bell Canada | 3189 centraux | 23 indicatifs |
| Bell Mobility | 2219 centraux | 45 indicatifs |
| Rogers Communications Canada Inc. (Wireless) | 2191 centraux | 51 indicatifs |
| Iristel Inc. | 2144 centraux | 52 indicatifs |
| TELUS | 1999 centraux | 10 indicatifs |
| TELUS Mobility | 1926 centraux | 48 indicatifs |
| Distributel | 1429 centraux | 35 indicatifs |
| Videotron Ltd. | 1368 centraux | 38 indicatifs |
| Fibernetics Corporation | 1357 centraux | 42 indicatifs |
| ISP Telecom Inc. | 809 centraux | 39 indicatifs |
| Fido Solutions Inc. | 771 centraux | 46 indicatifs |
| TELUS Quebec | 745 centraux | 9 indicatifs |
| TELUS Integrated Communications | 723 centraux | 24 indicatifs |
| Rogers Communications Canada Inc. (Cable) | 644 centraux | 35 indicatifs |
| MTS Inc. | 510 centraux | 2 indicatifs |
| Bragg Communications Inc. | 506 centraux | 16 indicatifs |
| SaskTel | 462 centraux | 2 indicatifs |
| Shaw Telecom Inc. | 447 centraux | 13 indicatifs |
| IXICA Communications Inc. | 427 centraux | 39 indicatifs |
| Bell West Inc. | 304 centraux | 11 indicatifs |
| Aliant Telecom (NS) | 298 centraux | 2 indicatifs |
| Comwave Networks | 294 centraux | 24 indicatifs |
| Bell Mobility Aliant | 290 centraux | 6 indicatifs |
| Aliant Telecom (NF) | 285 centraux | 1 indicatifs |
| SaskTel Mobility | 285 centraux | 2 indicatifs |
| Zayo Canada Inc. | 249 centraux | 31 indicatifs |
| Aliant Telecom(NB) | 240 centraux | 1 indicatifs |
| TekSavvy Solutions Inc | 230 centraux | 9 indicatifs |
| InnSysVoice Corp | 174 centraux | 15 indicatifs |
| Telebec Ltee. | 166 centraux | 6 indicatifs |
| Navigata Communications Limited | 165 centraux | 3 indicatifs |
| Telecommunications Xittel Inc | 131 centraux | 4 indicatifs |
| Cogeco Connexion Inc. | 120 centraux | 11 indicatifs |
| Access Communications Co-operative Limited | 117 centraux | 2 indicatifs |
| Northwestel | 108 centraux | 2 indicatifs |
| Rogers Communications Canada Inc. | 76 centraux | 7 indicatifs |
| Execulink Telecom Inc. | 72 centraux | 3 indicatifs |
| Primus Telecommunications Canada Inc. | 67 centraux | 17 indicatifs |
| Cooptel | 65 centraux | 6 indicatifs |
| Westman Media Cooperative Ltd | 62 centraux | 2 indicatifs |
| Beanfield Technologies Inc. | 61 centraux | 6 indicatifs |
| Provincial Tel Inc. | 58 centraux | 1 indicatifs |
| Aliant Telecom (PEI) | 49 centraux | 1 indicatifs |
| LES.NET (1996) Inc. | 49 centraux | 2 indicatifs |
| 9164-3122 Quebec inc | 44 centraux | 5 indicatifs |
| FGLTEL Inc. | 43 centraux | 4 indicatifs |
| ExaTEL Inc. | 42 centraux | 8 indicatifs |
| Nexicom Telecommunications Inc | 40 centraux | 3 indicatifs |
| Northern Telephone Ltd. | 40 centraux | 2 indicatifs |
| SSi Micro Ltd. | 40 centraux | 3 indicatifs |
| GT Group Telecom Services Corp. | 26 centraux | 6 indicatifs |
| IVIC Telecom s.e.n.c | 25 centraux | 4 indicatifs |
| Thunder Bay Telephone | 23 centraux | 1 indicatifs |
| Bell Aliant, a division of Bell Canada | 21 centraux | 3 indicatifs |
| Quadro Communications Co-operative Inc. | 20 centraux | 4 indicatifs |
| Sogetel Inc. | 19 centraux | 5 indicatifs |
| Persona Communications Inc. | 16 centraux | 2 indicatifs |
| Groupe Maskatel Quebec LP | 14 centraux | 2 indicatifs |
| RFNow Inc. | 14 centraux | 1 indicatifs |
| Wightman Communications Ltd. | 14 centraux | 3 indicatifs |
| CityWest Cable (North) Corp - BC | 13 centraux | 2 indicatifs |
| Managed Network Systems Inc. | 12 centraux | 4 indicatifs |
| Mornington Communications Co-operative Ltd. | 12 centraux | 3 indicatifs |
| Bruce Municipal Telephone System | 11 centraux | 2 indicatifs |
| Gosfield North Communication Co-operative Ltd. | 9 centraux | 3 indicatifs |
| Telephone Milot Inc. | 9 centraux | 2 indicatifs |
| Tuckersmith Communications Co-operative Ltd. | 9 centraux | 2 indicatifs |
| Westport Telephone Company Limited | 9 centraux | 2 indicatifs |
| Globalstar | 8 centraux | 2 indicatifs |
| TBayTel | 8 centraux | 1 indicatifs |
| Brooke Telecom Co-operative Ltd. | 7 centraux | 3 indicatifs |
| Hay Communications Co-operative ltd. | 6 centraux | 2 indicatifs |
| Huron Telecommunications Co-operative Ltd. | 6 centraux | 2 indicatifs |
| Ice Wireless Inc. | 6 centraux | 1 indicatifs |
| KMTS, a division of Bell Canada | 6 centraux | 1 indicatifs |
| Ontera, a division of Bell Canada | 6 centraux | 1 indicatifs |
| Telephone Drummond Inc | 6 centraux | 1 indicatifs |
| Wightman Telephone Ltd. | 6 centraux | 1 indicatifs |
| Dryden Municipal Telephone System | 5 centraux | 1 indicatifs |
| NRTC Communications | 5 centraux | 2 indicatifs |
| NorthernTel Limited Partnership | 5 centraux | 1 indicatifs |
| City West Cable and Telephone Corp. | 3 centraux | 1 indicatifs |
| CoopTel de telecommunication | 3 centraux | 1 indicatifs |
| North Renfrew Telephone Company Ltd. | 3 centraux | 1 indicatifs |
| CochraneTel | 2 centraux | 1 indicatifs |
| Keewaytinook Okimakanak | 2 centraux | 1 indicatifs |
| Nexicom Telecommunications Inc. | 2 centraux | 1 indicatifs |
| North Frontenac Telephone Company | 2 centraux | 1 indicatifs |
| Roxborough Telephone Company Ltd. | 2 centraux | 2 indicatifs |
| Telephone Guevremont Inc. | 2 centraux | 2 indicatifs |
| La Cie de Telephone de Courcelles Inc. | 1 centraux | 1 indicatifs |
| La Compagne de Telephone Upton | 1 centraux | 1 indicatifs |
| La Compagnie de Telephone de Lambton Inc. | 1 centraux | 1 indicatifs |
| La Compagnie de Telephone de St-Victor | 1 centraux | 1 indicatifs |
| Lansdowne Rural Telephone Ltd. | 1 centraux | 1 indicatifs |
| Le Telephone de St-Ephrem Inc | 1 centraux | 1 indicatifs |
| Nexicom Telephones Inc. | 1 centraux | 1 indicatifs |
| Westport Telephone Company Ltd. | 1 centraux | 1 indicatifs |