What is the Internet Corporation for Assigned Names and Numbers (ICANN)?
ICANN is a global non-profit, private sector organization that manages Internet resources for the public benefit. It is best known for its role as technical coordinator of the Internet’s Domain Name System.
To coordinate, at the overall level, the global Internet’s systems of unique identifiers, and in particular to ensure the stable and secure operation of the Internet’s unique identifier systems. In particular, ICANN:
1. Coordinates the allocation and assignment of the three sets of unique identifiers for the Internet, which are:
a. Domain names (forming a system referred to as DNS)
b. Internet protocol addresses and autonomous system numbers
c. Protocol port and parameter numbers
2. Coordinates the operation and evolution of the DNS root name server system
3. Coordinates policy development reasonably and appropriately related to these technical functions.