Called me yesterday and today. Did not leave a message. Phone ID'd it as coming from South San Francisco. Phoned it back and got a recording "Your call cannot be completed as dialed, please check your number and call again, message ID CO02ML".
Rec'd a call from this number on my cell Tuesday and today, Thursday. No message. ID'd as South San Francisco. 408 area code is not from SF, but further south like San Jose, Sunnyvale, Saratoga, Campbell, Morgan Hlll etc.