Occasional calls with no message. I am concerned as we get more fake calls than real calls, basically our landline is for the convenience of illegal telemarketers. First 6 digits of this number match my cell, seems likely that telemarketers are spoofing and testing numbers to get around my online call blocker or get me to pick up. This number was not flagged by my online blocker and it did ring my phone. I did not answer but those who dialed in know my phone is operational.