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No sound, call was disconnected.
Silent hang-ups like this one from unknown numbers often signal automated scam attempts probing for active lines. These calls, sometimes called 'ping calls' or 'ringless scams,' hang up immediately to trick you into calling back and racking up international charges, or to confirm your number for more spam. In this case, the abrupt silence followed by a drop suggests no legitimate intent—real callers identify themselves. Block the number right away using your phone's settings or carrier tools to prevent repeats. If it persists, report to the FTC at donotcall.gov or your local authorities. Staying vigilant avoids wasting time on ghosts like these.
No sound, call was disconnected.