?Ever notice a call that shows a city name like DENVER and then vanishes into voicemail? That pattern often signals a low‑effort scam where the caller hopes you’ll call back out of curiosity. The lack of a message suggests they’re testing whether the line is active rather than delivering a pitch. To protect yourself, let the call go to voicemail, block the number, and avoid returning the call. If you’re unsure, search the number online for community reports. Keep your caller ID settings tight and consider a call‑filtering app to catch similar nuisance attempts.