If you call it back it picks up immediately and the automated voice says to enter your number to get on the Do Not Call list for the number that called you. That's never a good sign.
I bet it's the same bunch that's been calling for at least 2-3 months with 419 and 567 area codes. Power Server or Power Center.
Just received a call from (567)-331-1878 promoting savings on my power bill. "Ashley" asked to confirm my telephone number which I asked her what company she represented. Her Reply was POWER SOURCE. I asked where she was calling from and she replied in her Asian dialect "New York". I asked her for her return telephone service and she replied "For security reason I can not give you that." At that point I tried to get more answers but the line went dead.