Some telemarketer [***] called me and this caller ID popped up.

I also received a call from 206-906-1006 around 2:45 pm, but no one said anything, it was just dead air... I looked up the number and found this, so I'm glad to know it was a telemarketer.

Dead air.  This is a relatively new phone number for me.  I don't know who it is that calling me but after I got the first ring I immediately went to the DNC list and registered the number.

Only dead air when I answer - this has happened several times over a two month period. I finally called the number back and get a recording for CONTACT AMERICA ?? It says to hold for the next available representative.  I don't understand - I registered my cell on the DNC list last year.