It's actually Defender Direct, also known by all the names you listed, and they're a licensed ADT dealer that is based in Indiana. Not a scam, just a contractor with ADT.
Automated voice says, "This is Keith Rose" - then hangs up. Curious that I always get these calls when my minutes are low at month's end. Hmmm, is TracFone "allowing" these random callers to find me in order to eat up my remaking minutes?
Kind of figured it was "one of them numbers" so glad I wasn't wrong and answered. I feel like an [***] everytime. They've also been calling from Manchester 860- 288-5755 another is Toll Free 866-291-7641 and maybe one more.