Any way to backtrace a phone number?

[petruzzi]

I keep getting a restricted number that calls my cell phone that Verizon cant trace. how is that possible?

 

[Quarkzquarkz]

Couple ways, server bouncer which can make some phone calls untraceable, but most are done these days via online phone calls that can execute incoming calls and never have a call back number. (i.e. Skype, Gmail, etc) ~Good luck!

 

[4745454b]

Closing this as its a dup.

http/www.tomshardware.com/answers/id-2039017/received-restricted-call-marked-date-time-call-called-verizon-check-number-sai.html