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
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.