Called again and hung up on my voicemail. The area code is in Idaho- I have no business contacts from there, so this has to be a spam call or a solicitation of some sort.
Call came in to my business phone ... I didn't answer because I didn't recognize the number. They did not leave a message. Thank you, people who have posted. Now I can "save" the number as "junk" and can ignore it the next time it calls as a known "junk" caller.