Actually that is a class B address.
The first octet of a class A is 1-126 (127 reserved for loop back)
class B is 128-191
class C is 192-223
since 172 is between the ranges of 128-191 that would make it class B
Class B subnet 255.255.0.0 or /16
Doug
On Sun, 2002-11-17 at 04:26, [EMAIL PROTECTED] wrote:
> nate wrote:
>
> > > Hello,
> > >
> > > What is the subnet-mask of IP "172.16.0.1" - "172.16.0.253" ?
> > > How to calculate ?
> >
> > that would be a class C - /24 or 255.255.255.0
> >
> > since the 2nd to last number(octet) is the same, you can use
> > this chart as a reference:
> > http://portal.aphroland.org/resources/subnet/subnet.txt
> >
> > nate
>
> Hello,
>
> Thank for your help first !
> How to study / learn about the file "subnet.txt"
> I don't understand "netmask","aggregate","addresses" and "wild bits"....
>
> Thank for your help more again !
>
> Edward.
>
>
>
>
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