The Internet Corporation for Assigned Names and Numbers (ICANN) is a nonprofit organization responsible for coordinating and managing the global Domain Name System (DNS), ensuring that every domain name and IP address remains unique and can be used across the internet.

ICANN oversees the assignment of domain names (like .com, .org, and country-specific domains), IP address allocation, and the management of DNS root servers.

By doing so, ICANN ensures the stable and secure operation of the internet’s addressing system, preventing conflicts in domain names and IP addresses.