Just got a call from 740 205 1721. They asked for me by name and just held the line for a while and hung up. I started a low level trace and fond it to be routed from Lancastor Ohio.
Just going to add it to my call block list.
Received a call this morning from the same number, no message left. Called the number back and got pre-recorded message from Cancer Treatment Centers, press 1 to have your number removed from the calling list.