Charitable organizations, political groups, organizations with which you have
an established business relationship and companies that do not encourage the
purchase, rental or investment in goods or services, such as those conducting a
survey or seeking a donation or contribution are exempted from the Do
restrictions. Here is the official list of exemptions
And I tend to fall victim to this mighty loophole almost 2-3 times a week.
Sometimes local sheriff organization, phone survey, or even companies with whom
I had a past business relationship tend to call up at my dinner time.
FTC and FCC
this registry with a great intention but I wonder why they left these loopholes.
I always ask the individual telemarketers to put me on their do not call list
and that seems to have helped me reduce the spam calls further.