did not say anything hung up

Probably 1 in 100 will return the call and get charged a few (or more) dollars to do so.
Hang up and don't let curiosity rule.

What a strange number

I do not answer any number that I do not know and indeed it is a strange number I have blocked so many my blocking is full and now i have also turned off my answering machine

Caller: Claimed to be Telstra.

Scammer claiming to be Telstra technician

I didn't answer it either. Too many numbers

Strange number indeed 😳I have had a few similar numbers call over the last few days. Obviously another scammer of some description 😫.

rang but no one there when answered

Didn’t answer. Strange Number

Did not answer - just blank. But agree, what a strange number!