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The End of the Free Pool

ICANN will hold a press conference in Miami on Thursday, presumably announcing the exhaustion of the IANA IPv4 address pool. This is when 102/8, 103/8, 104/8, 179/8, and 185/8 — each a block of 16 million addresses — will be handed out to the regional registries (RIRs), thereby ending the allocation of IPv4 address space at the first level of delegation.

I’m going to go ahead and predict right now that almost every journalist covering this event will get something subtle but essential wrong, and that the result will be fifteen minutes of panic followed by business as usual for everyone except those who understand the minutia of IP address allocation policy until we start seeing pressure at the lower levels of delegation.

As a disclaimer, I’m not actually one of those people who understands the minutia of IP address allocation policy, but you’re reading this on the Internet, so you’ve already proven yourself willing to believe things you read from random people who have no credibility whatsoever, and you certainly can’t do any worse with me than with the thirty-second blurb you might hear about this on your favorite cable news noisebox. So with that in mind, here’s what this actually means: