Moan your IP

See this at JianDan-a team blog which translte interesting things in Digg to Chinese.
What does moan mean?I don't know at first.But when I open that page,I got it.There's a lot of tools online to find out your ip address,but such sexy voices moan your ip,it's my first time to hear,and honestly speaking,it's really sexy,and at last I know what moan means.Maybe it's not fit for teenages/kids:p