IP Address | How are IP addresses distributed ?

How are IP addresses distributed ?

        IP addresses are distributed in a hierarchical system. As the operator of Internet Assigned NumbersAuthority (IANA) functions, ICANN allocates IP address blocks to the five Regional Internet Registries (RIRs) around the world. (The “regions” of the Regional Internet Registries are roughly continental in size.) The RIRs then allocate smaller IP address blocks to ISPs and other network operators. From there, the ISPs and other Internet operators assign the addresses to the individual Internet connections you are probably accustomed to.