www.callercenter.com reports that the (530) 392 exchange is managed by LEVEL 3 COMMUNICATIONS, LLC which is an American multinational telecommunications provider. The scammers are likely outside the country and thus difficult to prosecute or prevent from continuing to morph.
I just received a call from this number. They did not leave a message. Since I get so many robo, or scam, calls, I never pick up anymore unless I know the person calling. I'm writing to let folks know the scammers are still using this number.