ARIN’s IPv4 free pool has depleted. This is an important milestone for the Internet as now we now usher in the age of IPv6. As previously described in this blog series, ARIN has been placing /24s on hold for organizations over the past few months. This occurred when an organization qualified for a larger block size, but was given the option to accept our only available block size (/24) available at the time.
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Earlier this week ARIN and the other RIRs received a distribution of IPv4 address space from the IANA in accordance with their Global Policy for Post Exhaustion IPv4 Allocation Mechanisms. ARIN was issued a total of a /14 worth of IPv4 address space composed of one /15 block and two /16 blocks.
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With less than 45K IPv4 addresses remaining in the ARIN inventory, IPv4 depletion here at ARIN is only weeks away. We thought it’d be fun to get your ideas about the tag line we should use when ARIN hits IPv4 runout. Maybe we’ll even take you up on a few of these. Here’s what you came up with so far
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As described in an announcement on 1 July 2015, ARIN has activated the Unmet Requests Policy. Organizations are currently electing to accept block sizes smaller than those for which they qualified or are electing to be placed on the Waiting List for Unmet Requests. So far, 21 organizations have elected to be placed on the waiting list and ARIN expects there to be over 100 soon.
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We expect to take registration actions this week that will activate ARIN’s policy for unmet requests. For the first time, it is expected an organization will receive a block size smaller than they qualified for, and/or an organization will be placed on the waiting list for unmet requests.
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At the time of this post, there is only .15 of a /8 remaining in the ARIN IPv4 free pool. The largest prefix that remains available is a /11. Within days, that /11 will either be issued to a qualifying organization, or broken down to make smaller prefixes available for organizations who have qualified for a block size that falls between a /11 and the next available block size in inventory.
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Today we have .20 of a /8 remaining in the ARIN IPv4 free pool. At the same time, we have over 200 open tickets from organizations requesting IPv4 address space from that free pool. These requests are for sizes ranging from a /23 to larger than a /16. This does not count the many open tickets we have for /24s.
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Here at ARIN we have been actively discussing the depletion of the IPv4 free pool for many years. Our goal has been to prepare the Internet community for the day when we can no longer issue IPv4 address space to those who need it. As that day approaches, there has been increased interest in how IPv4 addresses are issued and what the options are after we reach depletion.
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What happens after ARIN depletes its free pool of IPv4 address space? Will there be a Phase 5 added to the IPv4 Countdown Plan? Is the IPv4 inventory counter always accurate? These are just some of the questions we’ve been hearing in recent weeks. We understand that IPv4 depletion is causing confusion and uncertainty, so we’d like to try address some of these common questions and provide some additional information on the current status of IPv4 run-out at ARIN.
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ARIN has implemented Phase 4 of our IPv4 Countdown Plan, and as a result, our response time for IPv4 requests has increased from our organizational goal of two business days. We acknowledge that this situation has caused some frustration in the community, and we are making adjustments to our IPv4 request procedures in an effort to improve response time. But the first question is what changed in Phase 4, and why? First – Phase 4 requires “team review” for all IPv4 requests. This allows us to ensure all organizations are being reviewed under the same set of requirements. By having at least two analysts review each new IPv4 request (and responses to an existing IPv4 requests), we have additional verification that each is handled in accordance with policy.
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