Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
You're confusing again domain names and IP addresses: domain names are indeed assigned by name registrars; IP addresses however are assigned by your ISP, or for a web site, the hosting company's ISP. Block of IP addresses are assigned to ISPs by "regional" registries: ARIN for the Americas, RIPE (Réseaux IP Européens) for Europe, etc...

These regional registries got their IP address blocks from IANA (Internet Assigned Number Authority), the whole gory details being shown here. At the beginning of the list, you'll see all the "legacy" IP addresses assignment in the 1980s: those are the class A address blocks; for instance, MIT has all 16 millions plus change of IP addresses from to

These legacy class A IP address blocks give each of these organizations more "public" IP addresses than say China.

IPv6 addresses are also being assigned by the same structures, but only a (very) limited number has been assigned so far.

by Bernard on Thu Dec 30th, 2010 at 10:14:10 AM EST
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