Not necessarily your situation -- but I noticed this from Time Warner as well and it turned out to be my old Airport Extreme hardware. Even with the latest firm

Not necessarily your situation -- but I noticed this from Time Warner as well and it turned out to be my old Airport Extreme hardware. Even with the latest firmware it wouldn't receive the delegated range. As soon as I upgraded to the latest model, it properly received a delegated range from TWC without me doing anything else. Just saying, there is a lot of reason to hate cable companies, but it's not always their fault :)