It's from a company called Intrapower. They are an ISP.

It appears to be some sort of marketing. I got a missed call from them also, and called back out of curiosity. The phone was answered by a 'bot' saying, Welcome to (xx) incorporating Wavenet Technology" .. The (xx) represents the part she said that was inaudible. In any event, it is an unsolicited call. Almost 100% likely to be telemarketing something you didn't ask for.. not want! I wouldn't waste time giving them any more consideration.. and if calls continue I will add them to my blocked call list

I KEEP GETTING REPEATED CALLS FROM THIS NUMBER. I BELIEVE ITS OPTUS TELEMARKETING AGAIN BUT I DON'T ANSWER AND THEY LEAVE NO MESSAGE AS TO WHO THEY ARE AND OR WHAT THEY WANT.   I HATE THIS SORT OF THING YET THE IDIOTS THAT DO IT SEEM TO THINK THEY ARE DOING YOU A FAVOUR ANNOYING YOU WITH THESE UNASKED FOR CALLS. I WISH THEY WOULD GROW UP AND GET A LIFE.