Silent hang-ups from numbers like this often signal automated systems probing for active lines. Reports indicate these tactics feed verified numbers to telemarketers or scammers, building lists for future spam. In this case, the quick disconnect aligns with number verification bots, which don't engage but confirm if your phone rings. To protect yourself, enable call screening on your device, register with do-not-call lists, and report suspicious activity to authorities. Blacklisting helps short-term, but apps like Google Voice or carrier tools can block patterns from similar numbers. Stay vigilant—don't call back unknowns, as it validates your line further.
Caller disconnected the line. This has occurred previously with similar numbers. I suspect a verification bot that supplies spammers like telemarketers with a list of active numbers. No benefit. I've now blacklisted this contact in Google.
