Who called from 6172023229

I had a call from 617-202 3229.  I was out and don't have answering machine but do have the caller ID.

There was no name but recorded unavailable.

Who was it?

Thank you

Seem to come from Massachusetts but caller ID name was: Unavailable
Sins I did not have this in my block list I picked up the phone, said hallo twice and there was still nobody - good sign of computer calling - and then I hung up.

I didn't answer because number was number was unfamiliar to me.  Caller ID said it was UNAVAILABLE and they left no message.  I added it to my blocked numbers list.  I figure, if they had no name identification and left no message, it was probably an illegal telemarketer or scammer.

I answered (partly because it's a local-ish number) but there was no one on the other line.

Call received today (1/20/15) @ 1148.  ID : "Unknown*  No message left.