Caller Id came up: Unassigned. Our area code, so the wife answered it (because we are expecting a local call). Turns out that this is from a political party asking for me. I don't take calls like these, so the wife told them that I was not available. They did not want to speak to her and did not say what the call was about.
We never answer unidentified or unfamiliar calls. We don't turn the ans/machine on while we are home. If we recognise the number we pick up. Let them guess whether they have rec'd an active number