This one works:
http://www.411.com/reverse_phone
But it's limited by the number of unlisted numbers
and unlisted cellphones. It's just a phone book.
Another one I've found useful is this:
www.whocallsme.com
I get a fair number of repeat calls from unlikely
places that don't leave a message. The US and
the state where I live (MA) were both very good
about creating do-no-call regulations a few years
ago. But the US is a corporatocracy. Massachusetts
quietly stopped enforcing their superior law, referring
me to US enforcement. As far as I can tell, the US
is no longer really doing anything. And they make
exemptions for non-profits, surveys, every poitician's
fans and family, etc. So Ace and Acme Corp. can
legally call and do their sales pitch in th form of a
survey.
www.whocallsme.com is a clever idea. It seems to be
some kind of forum where people share information.
So even if a harassing phone number is not listed one
can often get some information about who's calling.
At least one can find whether the number has complaints.
I don't know about the paid services. I run into those
whenever I try to find people from the past. Presumably
they buy data the way retailers do, so that they can
find corporate-shared information about you, operating
on the edge of legality. I've never been so desperate to
know that I'd pay up front for an unknown quantity of
information, and probably end up having to volunteer my
own personal dossier to the spy creeps while I'm at it.
| Like a lot of other things on the web, there USED to be free ones, but I'm
| with you, every one I've tried in the last few years wants money for
| details. Most of them will show a general location and whether it's a
| landline or cell, but if you want anything more, give 'em the old credit
| card number.
| --