I received a call last week with caller ID "L7 SCVC CALL" on the display, and the # was 609-401-2242.  I looked it up, and it's a scam - they're fishing for info.  I played a Fax Machine tone when I picked up - they haven't called back.
Until today.  Same "L7 SCVC CALL", but NOW the phone number is 720-549-7525.  Since it's the same Caller ID, I'm going to assume it's the same scammer, using a different number.  So I did the same "fax machine" trick.  We'll see if they try again with a new number....
Regardless, this number hasn't been reported yet - I wonder if it's new??  Go ahead an check out the 609-401-2242 posts - they're very interesting!!!

This same detail was shown on my phone as above, the L7 SCVC Call, of 1-720-749-7525. I answered and no person, but a speaker-like background could be heard. Asked a couple of times "hello" but no answer. Could it be those insidious Chinese-Russian hackers?

I received a call from the same number "7205497525" L7 SCVC CALL, i was not in my office at that time. no message from them so I did not call back.

This was some kind of survey survey or lobbying. They asked me if I was pro-life. They hung up on me as soon as i asked them what company they were from.

Received call and answered....   No response and they hung up after 15 secs.   Blocked this number.