Who called from 21670169987

You called me last night. But i don't know. Who are you?

I also got a call from the same number early morning today.

I also got a call from this number just a moment ago. Who are you?

Just got a missed call from this number, 7.01pm, 25th Oct.
I am from Singapore.
Have received some other weird phone numbers (two times to be exact) some while back.
Am wondering did they get our information by some apps we mightve dl-ed?
or is there anyone else who know if this is a scam?

Thank you!

Yes I am in Singapore and this number called me too. I don't know what happened!