It's probably through Caller ID spoofing. Callers hide their phone numbers by faking the information that appears on the recipient's caller ID. It can make a call appear to have come from any phone number the caller wishes.
To spoof a caller ID, caller can use the (1) typical spoofing service...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.