My mobile screened it as suspected spam

Beware of this unlisted number as it is almost certainly yet another spoofed number being used by cyber criminals. As this number was not recognised it was left to ring out with no message being recorded on completion. Accordingly, the above number has been blocked and reported.

Rang twice with 4 rings only but no message left. Not in my contacts list so I have blocked the number

I got the silent treatment from this unknown Sydney number.