'''Root Zone''' refers to the top of the Domain Name System ([[DNS]]). It contains all the top level domain name delegations such as the [[glTD]]s [[.com]], [[.net]], [[.$org]], [[.jobs]], all the country code top level domains ([[ccTLD]]) for example [[.us]], [[.uk]] [[.ph]] including the entire list of all the root servers.<ref>[http://www.iana.org/about/glossary/ Glossary]</ref>