Silent calls like these often signal attempts to verify active numbers for spam lists. The invalid callback and hang-ups suggest tactics to evade tracing, common in scam operations. Don't call back or engage, as it confirms your line is live and invites more harassment. Block the number immediately through your phone settings or carrier app. Report to authorities like the Do Not Call registry or FTC if persistent. Enable call screening features on your device to filter unknowns automatically. Staying vigilant protects your data from potential exploitation.
The caller dials and immediately hangs up to trigger a missed‑call notification, showing up as suspected spam and now blocked.
Received three calls yesterday and one today; when I answer there’s silence, and calling back returns an invalid number.
A callback revealed the line is inactive, suggesting they are concealing their identity.