North American Network Operators Group

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Re: Class B Address

  • From: Sean Donelan
  • Date: Sat May 20 23:07:23 2000

On Sat, 20 May 2000, "HANSEN CHAN" wrote:
> Can someone point me to some documents/weblink on how many class B
> addresses are still available? Have the registries like RIPE/ARIN/APRIN
> exhausted class B addresses already? IPv6 Forum presentations have me
> believed class B addresses are exhausted and the situation is especially
> bad for country like China. However, after checking with some Chinese I
> was told just the opposite. So I am wondering is address scarcity just a
> hype?

My question is what is your requirement for a "classfull" address?

With CIDR you can create the same number of addresses out of any of
the traditional Class A, B, or C areas.  There are plenty of /16 address
blocks available.  I have no idea of any need a country such as China has
which couldn't be satisfied by using /16 CIDR blocks.

If you stop thinking in terms of traditional classfull address blocks, I
think you find much of the "scarcity" goes away.