It's a bit surprising that sites like Zillow and Redfin don't yet include internet availability in listings. They probably could get a bit of revenue from doing

It's a bit surprising that sites like Zillow and Redfin don't yet include internet availability in listings. They probably could get a bit of revenue from doing so, as it's essentially an ad for the ISP. But I would caution that even ISP sometimes don't know what addresses they can service. It's not a large percentage but there are addresses in most ISP's availability databases that shouldn't be there.