On Thu, 23 Sep 1999 22:09:01 +0100,
Steve Dodd <[EMAIL PROTECTED]> wrote:
>If you were to change it to 255.255.252.0 (moving the
>network/host number boundary leftward by 2 bits), you could use IP addresses
>from 192.168.100.0 to 192.168.103.255 (except ..100.0 and ..103.255 are
>reserved of course) ...
>You might want to check my maths on the netmask stuff. I'm notorious for
>being slapdash and screwing that sort of thing up..
<blow own trumpet;>
ftp://ftp.ocs.com.au/pub/ipcalc.pl.gz
# ipcalc.pl 192.168.100.0/22
IP address 192 . 168 . 100 . 0 / 22 192.168.100.0/22
Netmask bits 11111111 11111111 11111100 00000000
Netmask bytes 255 . 255 . 252 . 0 255.255.252.0
Address bits 11000000 10101000 01100100 00000000
Network 192 . 168 . 100 . 0 192.168.100.0
Broadcast 192 . 168 . 103 . 255 192.168.103.255
First Host 192 . 168 . 100 . 1 192.168.100.1
Last Host 192 . 168 . 103 . 254 192.168.103.254
Total Hosts 1022
PTR 0.100.168.192.in-addr.arpa
IP Address (hex) C0A86400
</blow own trumpet;>
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