private vs. public IP addresses

[Alex Snow]

The 3 blocks of reserved IPs I know of are 10.x.x.x, 
172.16.0.0-172.32.255.255 and 192.168.x.x.  These are labeled class a, 
b, and c respectively.  This is defined in some rfc I just forget 
which one.  There might be other IPs scattered around that are 
reserved for LANs, but those are the only 3 large blocks I know of.
On 
Fri, Jul 14, 2006 at 12:03:47PM -0400, Charles Hallenbeck wrote:
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> I was intrigued by the discussion of Tyler's IP address issue. I know 
> about the 10.X range, and the 192.168.X range, and I seem to recall that 
> there are other restricted ranges. Is one of them a 72.X range? I am 
> having a bit of an issue right now with a user whose ISP hands him a 
> dynamic address starting with 72, and wonder if it might be a restricted 
> IP address.
> 
> 
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