I'm also in the process of an attempted scan by someone at this number. They use the e-mail address
[email protected] and a few other gmail accounts. The scam is they state they're interested in buying your Craigslist item and pretend (using spoof e-mails) to pay via PayPal. The amount they "transfer" includes an overpayment so that you can then wire payment for shipping to their shipping company via Western Union, whose address they provide you. In my case, they "transferred" $750 on a $450 item and instructed me to wire them the $300 "payment" to them via Western Union.
I've reported them to PayPal, Western Union, and the FBI. If they've attempted to scam you, you should do the same. Go here (www.ic3.gov/) to report online scams to the FBI.