Canadian Radio-television and Telecommunications Commission (CRTC)
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The following search options are available on the National DNCL Web site:

Check My Registration links to the section of the National DNCL Web site where Consumers can confirm their residential, wireless, fax, or VoIP telephone number(s) is registered on the National DNCL and check the effective date of the registration.

Purchase Access allows registered Telemarketers to the subscription section of the National DNCL Web site where Telemarketers can choose Query subscription to search individual numbers within the National DNCL.

In addition, you can find more information concerning the Unsolicited Telecommunications Rules, the National DNCL and telemarketing regulations on the Telemarketing information page in the Consumers section of the CRTC website