American registry organization can no longer meet ipv4 demand
The American organization that distributes IP addresses to ISPs and hosters has rationed the issuance of IPv4 addresses and introduced an IPv4 Unmet Requests policy. The service can no longer meet high demand and has to draw on a small reserve.
ARIN implemented the IPv4 Unmet Requests policy after approving a request for ipv4 addresses that exceeded available inventory. There is still a small stock of addresses, but it is only used for requests for smaller blocks. The ARIN maintains a list about the running out of addresses.
Those who still need ipv4 addresses in the US and Canada can make limited use of that small stock, but those who want large quantities will have to purchase them on the free market. ARIN further reminds organizations of the abundant availability of the ipv6 address space.
The latest step in the American release follows that of its European counterpart, Ripe NCC, in 2012. There have been reports for decades about the running out of ipv4 addresses. Most companies have only recently started to switch to ipv6. By the way, many providers and hosters have their own stock of ipv4 addresses, but once they run out, they can no longer get new ones. The African registry organization still has ipv4 blocks to forgive.