arin Class A addresses? CIDR?

Joseph S D Yao jsdy at cospo.osis.gov
Thu Aug 31 22:03:34 UTC 2000


On Thu, Aug 31, 2000 at 05:38:50PM -0400, Kevin Darcy wrote:
> 
> 64.209.178/24 isn't a "Class A", it's a "Class C". According to what you
> show below, that /24 appears to be split into 2 /26's and a couple of
> /29's. A little unusual.
> 
> Yes, they are using CIDR. Isn't everyone?
> 
> - Kevin

Unfortunately, no.  I wish.

Under the old Class A/B/C definitions, 64.0.0.0 is a Class A network.
Subnets could only be used contiguously.  Under CIDR house rules, it
can be subnetted indefinitely and the subnets used anywhere.

-- 
Joe Yao				jsdy at cospo.osis.gov - Joseph S. D. Yao
COSPO/OSIS Computer Support					EMT-B
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