Just got a call from them too-- rang once and hung up when I picked up.  Found the longitude and latitude for the caller through https://www.dobsearch.com/reverse-telephone.  No name, but the address of the caller according to the longitude and latitude obtained and looked up through google maps is (which appears to be a home):
1320 N 137th St
Seattle, WA 98133

Got a call just now, 11:50 am, one ring, hangup.  2nd one today.

Got a call at 6:50 p.m.  One ring and they hung up.

Received a call at 7:40 am on a Sunday morning from these guys.  If it's a Seattle number, they must be calling from their office or home at 4:40 am!  They need to get a life!  I've received 12 calls from them in the past 11 days, and they ring only once and then hang up.  Good thing I have caller ID.  They can continue to call me until the sky falls.

just got a call from this number... one ring and then nothing...twice today different numbers same thing  other number was linked to Verizon Wireless.