This is optus promotions department usually they will try to get you on a different plan if you are on pre paid.

i got the exact same number pop up. i called them back and it was like a group of girls giggling and clueless. i got this call again today and a few days ago. i dont think its important.

Another optus prepaid customer who received a call from this number.. i didn't answer it and it just rung out.. rang for about 15 seconds

Just got a missed call from this number and almost called it back, thankfully I googled it! Am also an optus prepaid customer...hmmm

I keep receiving calls from Optus too and im prepaid. They call me at home and my mobile, and i also get constant sms's about plans and all sorts of optus deals. But i have never once used them! How do i stop it??

I just got the call...told me they were from Optus offering em a new plan. I have prepaid. How did they get my name? I was suspicious as Optus usually send an sms with new plan options or tell you about it when you recharge..... Wonder what company it is?