I think all this flow of numbers, can only come from the phone company itself, as you see them changing phone numbers, and there are a great many phone numbers of them. Who can afford himself to have so many phone numbers, if it is not from a phone company itself, or from a few of their employees.

Have a look at the List of reported phone numbers:
http://800notes.com/AreaCode.aspx/1-888

This number phone i answered it as it was after 9pm no one on the other line.

This number also called me after 9pm and when I started to say I wasn't interested the female cut me off, was very rude and then hung up on me. This is why we need one of those 'no call' registries, so we don't have to put up with this.

I live in New Brunswick now and I received a call from this number in Sask on my caller ID.  I was not home at this time and lived in Sask years ago and thought it might be an old friend calling but i looked up your site so now dont have to worry if the call was important. tks.

We have been receiving calls from this number several times EVERY DAY. Thank you for this site. I called the number +1 866-652-5160 listed above and requested a supervisor, and asked to not be called anymore. He took my phone number and was polite about it. We'll see if they keep calling.

they can call because fall under the research catagory that
and thus are not considered telemarketers