[Techtalk] Classes of IP-adresses

Brian Sweeney bsweeney at physics.ucsb.edu
Tue Aug 28 09:43:59 EST 2001

I don't know if this is what you mean, but in general the Class A's use 
subnet mask, B's use, C's, and D's 
are reserved (multicast, right?).  As for why they chose the letters 
A,B,C,D, couldn't tell ya.

Sorry if that's not what you're looking for.  If you do figure out why 
they're named with those letters, let me know! ;-)


Mette Lund wrote:

> Hello..
> Do anyone know _why_ they are called class A (1.*.*.*-126.*.*.*), 
> class B (128.1.*.*-191.254.*.*),  class C (192.0.1.*-223.255.254.*), 
> and D (224.*.*.*-255.*.*.*)?
> I've tryed looking on the net, but I can't find the answer I'm looking 
> for.
> Thanx.. :)
> - Mette from Denmark
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