Have received a call once a week at least from similar numbers all starting with same first four digits 9184 with the four last digits differing each time. I never answer and they have never left a message. I am blocking each time, other numbers received have been 9184 9765, 9184 9780.

This number has called my work desk phone yesterday and today, no message left, probably dodgy.

Rings, then hangs up.Called back and it goes to Canster. Definitely spam.

they called and I didn't answer and they did not leave a message - probably spam because I have been receiving lots of spam calls!

unknown number, did not answer, they did not leave a message

Got called, they hung up after a few rings, no message left. Likely spam call.

Been also getting a ton of similar numbers calling and not leaving messages over the past few days-weeks (9184-XXXX)

Missed called no message