Go to: http://www.lnnte-dncl.gc.ca/
to block those telemarketers: Registration is free. Canadians can sign up online at http://www.lnnte-dncl.gc.ca/ or by calling the toll-free numbers 1-866-580-DNCL (1-866-580-3625) or 1-888-DNCL-TTY (1-888-362-5889). You can register your home phone, cell phone or fax number(s) on the National DNCL.
Once someone has signed up, most telemarketers can no longer call them starting 31 days after registration. However, consumers must renew their registration every three years if they want your number(s) to stay on the National DNCL.
Bell Canada is operating the service on a five-year contract with the CRTC.
Source: Relief for Canadian consumers as "Do Not Call" D-Day arrives
