Internet Assigned Numbers Authority is the organization that oversees the allocation of IP addresses to internet service providers (ISPs)
→ Protocol management : maintains over 2,000 protocol registries and protocol parameters
→ Domain names : maintain DNS Related tasks
→ IP addresses : assign ip’s to isp’s
→ IANA also manages DNS Security Extensions, DNS root zone servers, .INT registry for international treaty organizations, .ARPA zone for internet infrastructure, and reverse DNS service.