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.

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