internetprotocols.org I know it's long, but it is a great keyword. Google shows over 60 million results for this term. I also have internetprotocol.us What could be the value for these domains?
I don't know much about appraising but I think it could be a great name for hosting RFC's for people to download. I can only appraise developed sites, i'm not so sure with just domain names but this could be turned into something profitable i'm sure.