Welcome to the CNA Website

The CNA (Canadian Numbering Administrator) provides ...numbering administration service to the Canadian telecommunications industry under the regulatory oversight of the (CRTC). CNA functions include Canadian numbering resource administration, processing applications for North American Numbering Plan (NANP) resources and other telecommunications numbering resources. <show more >

Quick Links

CO Code/Phone Number Lookup

Look up and view the status of the Central Office
Code portion of a Canadian phone number.

Canadian Area Code Maps

View and download maps of the Canadian Area
Code complexes.

CSCN and RPC Calendars

Meeting and conference call calendars for the
CSCN and Relief Planning committees.

NXX Status Listings

CO Code (NXX) status listings for each NPA.

Industry News

2022-06-24 - New Canadian Exchange Area Listing available!
2022-06-18 - Area Code 683 is now in service in north-central Ontario covering the areas already served by Area Codes 249/705.
2022-04-23 - Area Code 368 is now in service in Alberta covering the areas already served by Area Codes 403/587/825 and 587/780/825.
2022-04-21 - Telecom Decision CRTC 2022-108: CRTC approves the CSCN’s proposed revised Appendix B to the Canadian Central Office Code (NXX) Assignment Guideline. The revised Guideline, Part 1 form and Appendix B are now available.
2022-03-26 - Area Code 753 is now in service in Eastern Ontario covering the area already served by Area Codes 343/613.
2022-02-24 - Telecom Decision CRTC 2022-51: Relief for area code complex 204/431 in Manitoba approves new Area Code 584 for service on 2022-10-29.
2022-02-24 - Telecom Decision CRTC 2022-50: Relief for area code complex 226/519/548 in southwestern Ontario approves new Area Code 382 for service on 2023-06-17.
2021-12-01 - Telecom Decision CRTC 2021-393: Relief for area code complex 819/873 in Western Quebec approves new Area Code 468 for service on 2022-10-22.
2021-11-10 - Telecom Decision CRTC 2021-371: Relief for area code complex 249/705 in central Ontario approves new Area Code of 683 for service on 2022-06-18.
2021-10-16 - Area Code 742 is now in service in Southern Ontario covering the area already served by Area Codes 289/365/905.
2021-10-02 - Area Code 474 is now in service in Saskatchewan covering the area already served by Area Codes 306/639.

The role of the Canadian Numbering Administrator (CNA) is being performed by COMsolve Inc. under contract with Canadian Numbering Administration Consortium Inc. (CNAC). The CNAC Privacy Policy and the www.cnac.ca Website Terms of Use may be found using the following links:
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