Caller ID displayed as "San Diego CA", following by an unrecognizable number. I let it go to my answering machine to screen the call. They didn't leave a message. I dialed back the number and encountered a busy signal, then the line quickly disconnected.
According to whitepages.com, this number is listed as a "Scam or Fraud."
There's talk that this number is associated with scam caller 619-490-4443 both of which have suddenly become extremely active. I've received multiple calls from each and both are now blocked. 619-374-8397 shows it's originating from San Diego the the 619-490-4443 from La Mesa. Total scam.