Carrier Identification Codes (CIC)


This numbering resource is administered by NANPA although all Canadian applications must be submitted to the CNA for approval and final submission to NANPA for processing.

CIC Description

Carrier Identification Codes (CICs) were developed to enable the routing and billing of telecommunications traffic from the local access service providers to specific inter-exchange and other service providers within the North American Numbering Plan (NANP) telecommunications network. Each CIC, in the XXXX format, identifies a service provider that has purchased Feature Group B (FGB) and/or Feature Group D (FGD) access services from the local access service provider.


CIC Assignment Guideline

Carrier Identification Codes in Canada are assigned according to the Industry Numbering Committee (INC) Carrier Identification Code Assignment Guideline, as accepted or modified by the Canadian Steering Committee on Numbering (CSCN) and in accordance with the CSCN CIC Adjunct.

The Canadian Adjunct Carrier Identification Code (CIC) Assignment Guidelines and and related documents can be obtained from the CRTC website by clicking here.


CIC Forms

Those meeting the requirements to apply for a Carrier ID Code can locate the forms in Appendix A and Appendix B on the CRTC website for submission to the CIC Administrator and submit them to NonCOCodeApps@cnac.ca.


CIC Status

The complete list of CIC Codes assigned in the NANP area may be found at https://www.nationalnanpa.com.

The CIC Codes currently assigned in Canada are listed here.


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