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The TCP/IP Guide  9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)       9  Name Systems and TCP/IP Name Registration and Name Resolution            9  TCP/IP Name Systems: Host Tables and Domain Name System (DNS)                 9  TCP/IP Domain Name System (DNS)                      9  DNS Name Servers and Name Resolution                           9  DNS Name Server Concepts and Operation

DNS Zone Management, Contacts and Zone Transfers 1 2 3 DNS Name Server Caching, Negative Caching and Data Persistence

Current Root Name Servers

Originally, the root name servers were given domain names reflecting the organizations that ran them. In these historical names we can see a veritable “who's who” of the big players in the development of the Internet: ISI, NASA, the United States military and others. Several of the servers are still run by government agencies or the US military, where added security can be put into place to protect them. For convenience, however, all the root name servers are now given alphabetical “letter names” in the special domain “root-servers.net”.

Table 167 shows the most current information about the DNS root name servers as of the date of publishing of this Guide. For your interest and amusement I have also mapped the locations of these servers in Figure 242.

DNS Zone Management, Contacts and Zone Transfers 1 2 3 DNS Name Server Caching, Negative Caching and Data Persistence