Is there a way to trace "Unknown" phone calls?

i’m not sure you can trace them, but you can block them. Call your phone company to find out how to block unknown or blocked numbers.

No, only if the police have probable cause or you know someone in the phone company or police or gestapo (geheimstatpolizei = homeland security) who will do it without probable cause.

Here is one way. Excerpt:

“A new service set for launch Tuesday allows cellphone users to unmask the Caller ID on blocked incoming calls, obtaining the phone number, and in some cases the name and address, of the no-longer-anonymous caller.

The service, called TrapCall, is offered by New Jersey’s TelTech systems, the company behind the controversial SpoofCard Caller ID spoofing service. The new service is likely to be even more controversial — and popular.

“What’s really interesting is that they’ve totally taken the privacy out of Caller ID,” says former hacker Kevin Mitnick, who alpha-tested the service.

TrapCall’s basic unmasking service is free, and includes the option of blacklisting unwanted callers by phone number. It also allows you to listen to your voicemail over the web. It’s currently available to AT&T and T-Mobile subscribers, with support for the other major carriers due within weeks, says TelTech president Meir Cohen. ”

I vouch for TrapCall too. It really worked for me.

yeah I was getting unknown calls from some people speaking a language I couldn’t recognize for the life of me…. found out it was a caller in Mongolia…. old Mongolian Ladies called me twice a week for three months usually at 4 in the morning….