I just got the same call! No one on the other end but the last digit was missing for me too. WTF? I've been job hunting so I bet they got my number from my resume.
Since 3 or 4 month ago, every each month, I receive phone call from the number 310-487-598(Last digit missing)
calling history I know so far
9:56am Apr25/2009 and today May/14/2009 2:12pm
received call from 310-487-598 (last digit missing) on my cell today. I am do not call list so they are in violation of law. They hung up as soon as I answered. I will ignore in future.
After the phone rang, I answered. After about a 3 second pause, the message came on to say something like: "Hi, my name is Dan. I've been in the carpet cleaning business for 20 years. To celebrate I'm offering a special". I then pressed "#" to see if I could skip to the message recorder. At that point the calling machine hung up.