Called the number back and they would not answer with live person,  They thanked me for calling and ask for my name, phone number and email address but gave no information as to who they were or what they wanted.  Guess I'll never find out.  I put them on call blocker

Someone is getting ripped of fusing this auto dialer.  As soon as you answer it hangs up.  If you call back they say to leave a message or send a fax.  A worthless minute spent.  I am on the do not call list though.

How do you get on the do not call list?

How to get on the "Do Not Call" List

Add the number to National Do Not Call registry. To register by phone, call 1-888-382-1222 (voice) or 1-866-290-4236 (TTY).

There are some exceptions to the do-not-call rule. For example, calls from political organizations, not-for-profit organizations and organizations conducting surveys are still allowed.

References:
www.fcc.gov/encyclopedia/do-not-call-list
www.donotcall.gov/
www.fcc.gov/.../unwanted-telephone-marketing-calls
en.wikipedia.org/.../National_Do_Not_Call_Registry
www.naruc.org/commissions.cfm

Unknown caller