(615) 349-1426 called, came up on caller ID as "Private Call", asked for me by name, would not say who was calling but by the time I got to the phone caller had hung up.
I see from other websites that this is a known nuisance number.

I have had four calls to my unlisted home number from 615 349 1426 in the last two days.  The reason my number is unlisted is so that I am not inundated with this kind of calls but get all the important business calls.
Twice the phone either stopped ringing before I answered.  Twice I picked it up quickly and there was only silence on the line.
On two separate occasions, I called back.  The last time, a woman answered.  She replied that the call was in connection with some kind of cancer research. She knew me by name, so I believe that the phone number has been sold (by AT&T?).
I requested that she stop calling my number and add it to her organization's do not call list, otherwise I would report it as a nuisance call.

This is a number in Davidson county (Nashville) TN and because it is in the same state and purports to be a charity, I guess my number being listed at donotcall.gov makes no difference.

But based on what I have read elsewhere about calls from this number, her claim to be a charity is suspect.

Regardless, my request that she stop calling and add my number to her own DNC list should work.  Otherwise the organization can be fined about $500 each time they call my number.

Time will tell, I will wait and see.