private vs. public IP addresses

Charles Hallenbeck chuckh at hhs48.com
Fri Jul 14 13:23:31 EDT 2006


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Thanks, Travis. I appreciate the rundown.


On Fri, Jul 14, 2006 at 12:36:55PM -0400, Travis Siegel wrote:
> There are actually 5 classes of ips.  Class a, b, and c are the ones  
> used on the internet as a whole, and those ips have already been  
> mentioned here.
> Class D has a 224.something range of ips that are considered private  
> as well.  However, this is hardly a consideration, since class D  
> addresses are used strictly for multicasting purposes, and it's  
> likely you'll never need one.
> Then, there's class E addresses.  These start at 240, and there is  
> one of these reserved for private use too, though again, I don't know  
> what it is.
> Class E addresses are for experimental purposes, and are also  
> generally multicast addresses.  Again, you'll probably never see one  
> of these ips on any network, and especially not on the internet.   
> But, they are there, and are used occasionally, even if we don't  
> encounter them.
> 
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