Windows Server® 2012 Unleashed

The DNS Namespace

The bounded area that is defined by the DNS name is known as the DNS namespace. microsoft.com is a namespace, as is marketing.companyabc.com. Namespaces can be either public or private. Public namespaces are published on the Internet and are defined by a set of standards. All the .com, .net, .org, and similar namespaces are external, or public. An internal namespace is not published to the Internet, but is also not restricted by extension name. In other words, an internal, unpublished namespace can occupy any conceivable namespace, such as companyabc.local or companyabc.internal. Internal namespaces are most often used with Active Directory because they give increased security to a namespace. Because such namespaces are not ...