I have been receiving calls form this number for weeks now and I never pick up or call back and I am on the no-call list. I use a cheap phone not a smart phone for privacy reasons. If I que my phone for reset after expunging this number from my received calls list, I am not menaced by this trash call for several days. I suggest that the number plays like a commercial marketing firm, when in fact it is just another US Security snoop for junk phones. Runs a tracer on your phone real time.
818 is a phony code for Inglewood CA this is why when you call back it says not valid.. The number is 310-256-2639. Internet search helps a lot. Spam call 9 x in one day and also use 'anonymous' which bypasses any block via your phone company
Success! See results for (310) 256-2639 [People's Finders]: this is what I found - Carrier: CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA [cell phone]. I have 8 calls just today only. Labeled it 'telemarketer', however, spamming, robo call and more come to mind. Going to try to get in touch with Verizon/Cellco