Asian internet registry still has 5M 32-bit addresses from different sources – or practically infinite IPv6s
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Before the internet registry started delegating resources from 103/8, community members anticipated exhaustion of IPv4 addresses. At that time, APNIC adopted a policy that its members could each receive a smaller /22 block of IPv4 addresses – representing 1,024 unique addresses – from 103/8, then later reduced that allocation to the 512 total addresses in a /23 block.
Pan wrote that the registry"will still have IPv4 address space to delegate for another five years" but added"the exhaustion of 103/8 is yet another reminder that it is time to start deploying IPv6, if your organization has not yet done so."The IPv4 address space uses 32-bit numbering, so only ever offered 4,294,967,296 unique addresses – which used to sound like a lot. IPv4 was developed in 1980 – when the prospect of four billion or so devices on the internet seemed remote.
That's 340 undecillion and plenty of change – there are not that many stars in the Milky Way. Competition for all those undecillions of IPv6 addresses is not fierce – partly because there are so many of them they're essentially infinite.
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