Carriers
These are original code holders. Number portability means they may not be the current service provider.
| Bell Canada | 3189 exchanges | 23 area codes |
| Bell Mobility | 2219 exchanges | 45 area codes |
| Rogers Communications Canada Inc. (Wireless) | 2191 exchanges | 51 area codes |
| Iristel Inc. | 2144 exchanges | 52 area codes |
| TELUS | 1999 exchanges | 10 area codes |
| TELUS Mobility | 1926 exchanges | 48 area codes |
| Distributel | 1429 exchanges | 35 area codes |
| Videotron Ltd. | 1368 exchanges | 38 area codes |
| Fibernetics Corporation | 1357 exchanges | 42 area codes |
| ISP Telecom Inc. | 809 exchanges | 39 area codes |
| Fido Solutions Inc. | 771 exchanges | 46 area codes |
| TELUS Quebec | 745 exchanges | 9 area codes |
| TELUS Integrated Communications | 723 exchanges | 24 area codes |
| Rogers Communications Canada Inc. (Cable) | 619 exchanges | 35 area codes |
| MTS Inc. | 510 exchanges | 2 area codes |
| Bragg Communications Inc. | 506 exchanges | 16 area codes |
| SaskTel | 462 exchanges | 2 area codes |
| Shaw Telecom Inc. | 447 exchanges | 13 area codes |
| IXICA Communications Inc. | 427 exchanges | 39 area codes |
| Bell West Inc. | 304 exchanges | 11 area codes |
| Aliant Telecom (NS) | 298 exchanges | 2 area codes |
| Comwave Networks | 294 exchanges | 24 area codes |
| Bell Mobility Aliant | 290 exchanges | 6 area codes |
| Aliant Telecom (NF) | 285 exchanges | 1 area codes |
| SaskTel Mobility | 285 exchanges | 2 area codes |
| Zayo Canada Inc. | 249 exchanges | 31 area codes |
| Aliant Telecom(NB) | 240 exchanges | 1 area codes |
| TekSavvy Solutions Inc | 230 exchanges | 9 area codes |
| InnSysVoice Corp | 174 exchanges | 15 area codes |
| Telebec Ltee. | 166 exchanges | 6 area codes |
| Navigata Communications Limited | 165 exchanges | 3 area codes |
| Telecommunications Xittel Inc | 131 exchanges | 4 area codes |
| Cogeco Connexion Inc. | 120 exchanges | 11 area codes |
| Access Communications Co-operative Limited | 117 exchanges | 2 area codes |
| Northwestel | 108 exchanges | 2 area codes |
| Rogers Communications Canada Inc. | 76 exchanges | 7 area codes |
| Execulink Telecom Inc. | 72 exchanges | 3 area codes |
| Primus Telecommunications Canada Inc. | 67 exchanges | 17 area codes |
| Cooptel | 65 exchanges | 6 area codes |
| Westman Media Cooperative Ltd | 62 exchanges | 2 area codes |
| Beanfield Technologies Inc. | 61 exchanges | 6 area codes |
| Provincial Tel Inc. | 58 exchanges | 1 area codes |
| Aliant Telecom (PEI) | 49 exchanges | 1 area codes |
| LES.NET (1996) Inc. | 49 exchanges | 2 area codes |
| 9164-3122 Quebec inc | 44 exchanges | 5 area codes |
| FGLTEL Inc. | 43 exchanges | 4 area codes |
| ExaTEL Inc. | 42 exchanges | 8 area codes |
| Nexicom Telecommunications Inc | 40 exchanges | 3 area codes |
| Northern Telephone Ltd. | 40 exchanges | 2 area codes |
| SSi Micro Ltd. | 40 exchanges | 3 area codes |
| GT Group Telecom Services Corp. | 26 exchanges | 6 area codes |
| IVIC Telecom s.e.n.c | 25 exchanges | 4 area codes |
| Thunder Bay Telephone | 23 exchanges | 1 area codes |
| Bell Aliant, a division of Bell Canada | 21 exchanges | 3 area codes |
| Quadro Communications Co-operative Inc. | 20 exchanges | 4 area codes |
| Sogetel Inc. | 19 exchanges | 5 area codes |
| Persona Communications Inc. | 16 exchanges | 2 area codes |
| Groupe Maskatel Quebec LP | 14 exchanges | 2 area codes |
| RFNow Inc. | 14 exchanges | 1 area codes |
| Wightman Communications Ltd. | 14 exchanges | 3 area codes |
| CityWest Cable (North) Corp - BC | 13 exchanges | 2 area codes |
| Managed Network Systems Inc. | 12 exchanges | 4 area codes |
| Mornington Communications Co-operative Ltd. | 12 exchanges | 3 area codes |
| Bruce Municipal Telephone System | 11 exchanges | 2 area codes |
| Gosfield North Communication Co-operative Ltd. | 9 exchanges | 3 area codes |
| Telephone Milot Inc. | 9 exchanges | 2 area codes |
| Tuckersmith Communications Co-operative Ltd. | 9 exchanges | 2 area codes |
| Westport Telephone Company Limited | 9 exchanges | 2 area codes |
| Globalstar | 8 exchanges | 2 area codes |
| TBayTel | 8 exchanges | 1 area codes |
| Brooke Telecom Co-operative Ltd. | 7 exchanges | 3 area codes |
| Hay Communications Co-operative ltd. | 6 exchanges | 2 area codes |
| Huron Telecommunications Co-operative Ltd. | 6 exchanges | 2 area codes |
| Ice Wireless Inc. | 6 exchanges | 1 area codes |
| KMTS, a division of Bell Canada | 6 exchanges | 1 area codes |
| Ontera, a division of Bell Canada | 6 exchanges | 1 area codes |
| Telephone Drummond Inc | 6 exchanges | 1 area codes |
| Wightman Telephone Ltd. | 6 exchanges | 1 area codes |
| Dryden Municipal Telephone System | 5 exchanges | 1 area codes |
| NRTC Communications | 5 exchanges | 2 area codes |
| NorthernTel Limited Partnership | 5 exchanges | 1 area codes |
| City West Cable and Telephone Corp. | 3 exchanges | 1 area codes |
| CoopTel de telecommunication | 3 exchanges | 1 area codes |
| North Renfrew Telephone Company Ltd. | 3 exchanges | 1 area codes |
| CochraneTel | 2 exchanges | 1 area codes |
| Keewaytinook Okimakanak | 2 exchanges | 1 area codes |
| Nexicom Telecommunications Inc. | 2 exchanges | 1 area codes |
| North Frontenac Telephone Company | 2 exchanges | 1 area codes |
| Roxborough Telephone Company Ltd. | 2 exchanges | 2 area codes |
| Telephone Guevremont Inc. | 2 exchanges | 2 area codes |
| La Cie de Telephone de Courcelles Inc. | 1 exchanges | 1 area codes |
| La Compagne de Telephone Upton | 1 exchanges | 1 area codes |
| La Compagnie de Telephone de Lambton Inc. | 1 exchanges | 1 area codes |
| La Compagnie de Telephone de St-Victor | 1 exchanges | 1 area codes |
| Lansdowne Rural Telephone Ltd. | 1 exchanges | 1 area codes |
| Le Telephone de St-Ephrem Inc | 1 exchanges | 1 area codes |
| Nexicom Telephones Inc. | 1 exchanges | 1 area codes |
| Westport Telephone Company Ltd. | 1 exchanges | 1 area codes |