Lost Indoor Cat in Ryde - Help Us Find Him!

If you see this cat around Ryde/Top Ryde please contact me 0433700331 or my sister 0430742553. He was last seen at home last night. He's an indoor cat. Not sure when he escaped. Unable to find him this morning. No doors/windows were opened, nobody used the door. Already searched the house thoroughly to no avail. We're very worried. He's been indoor since he was a few weeks old. Not sure if he can survive outside. I asked neighbours, flyers have been put out, I searched around the neighbourhood for hours, local shelter & vets have been contacted. Please contact us if you see him. He's a very loved baby in our family