Receiving a phone call from an unknown individual, or receiving a call and not recognising the caller ID can get seriously confusing. If you’re a Canadian resident and want to figure out who exactly has been calling you without the hassle of the “Hi, who is this and why did you call me” phone call, you can make use of the canada reverse phone directory, allowing you to search the cell phone, home phone or business number that called and establish exactly who called you: So you can decide whether to call them back or not.