Largo, your instincts ring true (pun intended!). It has the look, feel and timing (sandwiched between similarly spoofed numbers & CIDs) of either PR or Dynamic Recovery Solutions, another equally sleazy junk debt buyer. It's always the same MO. When they realize you've blocked a spoofed number they switch to another fake CID in a lame effort to trick you into answering. They spoof local numbers in your area code, charities, police associations, energy savings schemes and other ridiculously transparent identities. There's a pattern to their harassment calls and it's not as difficult to detect and block their trolling as they apparently think.
I got a call from 818-273-0020 on February 2, 2016 at 7:04 pm. The caller did not leave a message even though my answering machine was on. My caller ID said, "California," whatever that is supposed to mean. Don't all legitimate companies use their real name for their ID? I would think so. I have been on the Do Not Call list for ten years.
Someone called today at 1:22 PM and my answering machine picked up. They did not leave a message and the caller ID said Sunland, CA. It has the look and feel of calls I’ve received from Portfolio Recovery who is a debt collector but I don’t know for sure.