this post was submitted on 18 Mar 2026
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The minimum quantity depends on what level you're buying at. A retail isp will go as small as a /29. I don't think I've ever seen them do a /30, but it's been a while. The biggest they would probably do is a /24.
Now if you were talking to a big-name IP address broker, you could probably get as big as an /8 and as small as a /24. But an /8 would probably cost billions of dollars, if anyone is willing to sell at all. You'd probably have to buy the whole company.
At this point, anyone that is even thinking of acquiring a /8 should instead spend that money on building IPv6 infra instead. And they'd still have tens of millions of dollars leftover.
I would be thrilled if one day, the only remaining customers for Legacy IP addresses are the hyperscalar cloud providers. Let them hoard them all, so long as everyone else has a viable IPv6 Internet to use.