域名 Domain Names
IANA管理域名根，.int和.arpa域名，还有部分IDN（多语种域名Internationalized Domain Names）域名资源
数字资源 Number Resources
协议分配 Protocol Assignments
The Internet Assigned Numbers Authority (IANA) is a department of ICANN responsible for coordinating some of the key elements that keep the Internet running smoothly. Whilst the Internet is renowned for being a worldwide network free from central coordination, there is a technical need for some key parts of the Internet to be globally coordinated, and this coordination role is undertaken by IANA.
Specifically, IANA allocates and maintains unique codes and numbering systems that are used in the technical standards (“protocols”) that drive the Internet.
IANA’s various activities can be broadly grouped in to three categories:
IANA manages the DNS Root, the .int and .arpa domains, and an IDN practices resource.
IANA coordinates the global pool of IP and AS numbers, providing them to Regional Internet Registries.
Internet protocols’ numbering systems are managed by IANA in conjunction with standards bodies.
IANA is one of the Internet’s oldest institutions, with its activities dating back to the 1970s. Today it is a set of services provided by the Internet Corporation for Assigned Names and Numbers, an internationally-organised non-profit organisation set up by the Internet community to help coordinate IANA’s areas of responsibilities.