Specifically, the Internet Assigned Numbers Authority (IANA) allocated two of the last seven blocks of Net addresses that use today's Internet Protocol version 4 (IPv4). That will trigger the automatic distribution soon of the last five, one each to the five regional Internet registries (RIR) that oversee the distribution of the numbers farther downstream, to the Internet service providers and other companies that actually need the IPv4 addresses.
It's hard to predict how long it will be before these eventual customers of IPv4 addresses will be unable to get them easily.
"The rate of further regional assignment will depend on regional demand, which is accelerating faster in some parts of the world (Asia/Pacific) than others (Africa)," said Alain Durand, director of software engineering at network equipment maker Juniper Networks. "Some service providers may exhaust their IPv4 addresses within 3 to 6 months, while others will exhaust them perhaps over a longer period, depending on the rate at which they are allocated."
