Calling back from a burner number gets a synthetic voice message saying "Hello. None of our representatives are available right now. If you received a call from this number, we should contact you within the next day. If you believe you receive this call by error, please press 1 to be added to our do not call list."
Yes, I "receive this call by error" because I'm on the state and federal do not call lists.
Even when they use a synthetic voice, you can still tell the overseas scammers by their grammar.
Nothing definitive, but feels suspect. CID="Compliant Systm". Did not leave a message. 701 area code is North Dakota; search engine inquiry of various combinations came up empty (phone #, "compliant" & "dakota" or "ND"