Have noticed in other countries they have dot com-- dot uk-- dot au-- dot de---etc etc--why doesn't the US have a dot us?

Answer 1

Actually - the US does have .us - see [http://www.nic.us/ http://www.nic.us/]. For the [http://en.wikipedia.org/wiki/Generic_top-level_domain non-country endings] and non-US owned domains(namely, .aero, .arpa, .biz, .cat, .com, .coop, .edu, .info, .int, .jobs, .mobi, .museum, .name, .net, .org, .pro, .tel, and .travel) the [http://en.wikipedia.org/wiki/Internet_Corporation_for_Assigned_Names_and_Numbers internet Corporation for Assigned Names and Numbers] registers sites or passes authority along to other registrars.