I just recieved a call from this number on my cellphone and the caller did not leave a voice message.  I intentionally did not answer the call since I did not recognize the caller's phone number on Caller ID.  My cell phone is only a few months old and I do not release it's number to anyone except my employer and wife so the caller is likely randomly trolling for something.  Whitepages.com indictes the caller has an unpublished number.

Yeah They Called Me Twice Too!
ive Always Been Getting Calls From Other Are Codes!

I received a call from this number on my office line. I looked up the area code and saw it was from Delaware. So I'm assuming its from a credit card company. My cards have no outstanding payments due so maybe it was a call to solicit for a new customer..

ive gotten lots of calls from this number and i dont have any credit cards to speak of..its getting annoying i answer and they say nothing.

Its a wca offer clearing house thing. Do not answer it its spam.  I called them back and this is their 4 number. They have one everywhere. When you call its a number removal line