On 6/6/2008 9:07 AM, Todd Walton wrote:
167.190.45.0 (address) and 255.255.255.0 (mask)
which yields an IP range of 167.190.45.1 up to 167.190.45.254. That's
fine. But then some of them are of the type:
167.190.1.24 (address) and 255.255.255.248 (mask)
which yields an IP range of... ?
If you think of the IP address and subnet mask as dotted-quad
representations of binary numbers it might make more sense.
Sometimes the mask is like 255.255.240.0 or 255.255.255.192. Aagh!
What the heck is going on? Is there a calculator for this stuff?
ipcalc is a Linux calculator for this stuff.
$ ipcalc 167.190.1.24 255.255.255.248
Address: 167.190.1.24 10100111.10111110.00000001.00011 000
Netmask: 255.255.255.248 = 29 11111111.11111111.11111111.11111 000
Wildcard: 0.0.0.7 00000000.00000000.00000000.00000 111
=>
Network: 167.190.1.24/29 10100111.10111110.00000001.00011 000
HostMin: 167.190.1.25 10100111.10111110.00000001.00011 001
HostMax: 167.190.1.30 10100111.10111110.00000001.00011 110
Broadcast: 167.190.1.31 10100111.10111110.00000001.00011 111
Hosts/Net: 6 Class B
Karl
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