Who called from 7605978138

I've gotten multiple spam calls from this area code over the past few days. I let this one ring through to voice mail. There was just dead air on the recording. Can't prove it's a spammer, but posting so others can confirm if they're getting calls.

Called my DNC home line. No message. Blocked the number.

Just got a call to my DNC land line.  Didn't pick up, no message.  The number sounds familiar, I've probably heard from it before.  If anyone gets a positive ID on them, please share it!
April 12, 2017, 6:09 PM.  Call from 760-597-8138.   Caller ID said, "CALIFORNIA CALL."  No message.

Received call, no message.
Call back and received a disconnect message.

Called 13April2017@3:03PM PDT, CID=Unavailable. No message left. Previously called 11April@10:35AM. Exchange is Vista, CA. If caller is Unavailable so am I. Spring break time so possible prankster.