Who called from 6194904278

Called my phone, never answered when I said hello. Kept the line open for a half a minute but never made a sound then hung up.

Ring once and hang up

Called this morning but hung up before I answered.

Rings once only...if you call it back no one will answer. They use this to verify working numbers so they can sell your number to telemarketers.

Good to know. Thanks for the info. That must be why I get so many "ring once" calls.