Who called from 6237451848

Blank call, just said "Phoenix, AZ" as the caller ID. We are located in Arizona.

...and they just called my cell phone now. The first post was on my work's land-line. Strange.

I rejected the call because I don't answer unknown numbers. No message. I called it back, "non working number"

Called my cell phone. No message left.

Same thing, unknown number and didn't leave a message. I live in Arizona so I did call it back but it says it's a non working number.