This was the middle number of a series of 3 calls that came very close together. The other two were known spammers. This number is also just slightly different from another known spam number. No message was left, so I can't be certain it's a spam call, but I think caution is advised.
The usual spammer symptoms. Calls and leaves no message. This is the general phone number sequence where most of my many solar spammer phone calls and I suspect that is what it is. Block the number.