Who called from 6615631786

I answered.  No one answered and was just dead air (just like before it clicks over to a scammer call).  Blocked the number.

Caller ID said Wireless Caller. Did not leave a message. Other websites label this number as spam. Now blocked.

Same!

Caller I.D. shows "Wireless Caller".Has called several times, no one answers, just dead air.

The number is similar to a business I work with, so I've answered a couple times.  It's either dead air, or they say they are a "re-modeler" that can save money for the "home-owner".   When I say I rent, they hang up.   They are now blocked.  They don't sound legit at all, lots of background noise and it is obviously a robo-call with the way you have to say hello twice.