If you do not know who AFP is - and are not expecting a check from us, then this is likely a fraudulent check. Checks issued on an account ending in 3141 or 3274 are fraudulent.
One possible scam is that you are selling something, and a purchaser sends you a fraudulent check for higher than your selling price. The purchaser asks you to just send a check for the difference, and before your bank can determine that the purchaser's check is fraudulent - you've already sent the purchaser your check. The purchaser doesn’t even care about the item you are selling - but you may not want to ship it until you have verified funds.
Another scam is a donation for a charity - by the time you issue a donation receipt, you wouldn’t know the donated check was fraudulent.
Recently we've heard scams targeting individuals who are applying for a work-from-home position and the check is to purchase equipment. Don't be fooled by attempts to make this scam appear legitimate because the fraudster spent money to send you a fake check by expedited delivery.
If it seems too good to be true, it likely is a scam.