You can register your phone number for free, and it will remain on the national do-not-call list for five years. You may re-enter your number on the list when the five years have passed, and you may remove your number from the list at any time.
The Do-Not-Call registry does not prevent all unwanted calls. It does not cover the following:
* calls from organizations with which you have established a business relationship;
* calls for which you have given prior written permission;
* calls which are not commercial or do not include unsolicited advertisements;
* calls by or on behalf of tax-exempt non-profit organizations.
Thanks, that information is a pisser.