Short:        Subnet mask notation conversion tool
Author:       carsten.larsen@mail.com (Carsten Larsen)
Uploader:     carsten larsen mail com (Carsten Larsen)
Type:         comm/net
Version:      1.2
Architecture: m68k-amigaos >= 2.0.4

Whatmask is a small CLI program that will help you with network settings.

Whatmask can work in two modes.  The first mode is to invoke Whatmask
with only a subnet mask as the argument. In this mode Whatmask will
echo back the subnet mask in four formats, plus the number of useable
addresses in the range.

To use Whatmask in its second mode execute Whatmask with any ip address
within the subnet, followed by a slash ('/'), followed by the subnet
mask in any format. (e.g. 192.168.0.23/255.255.255.224, or
192.168.0.23/27) Put no spaces in the argument.

Examples of how Whatmask works:

System:>  whatmask /26

---------------------------------------------
        TCP/IP SUBNET MASK EQUIVALENTS
---------------------------------------------
CIDR = .....................: /26
Netmask = ..................: 255.255.255.192
Netmask (hex) = ............: 0xffffffc0
Wildcard Bits = ............: 0.0.0.63
Usable IP Addresses = ......: 62

System:>  whatmask 255.255.192.0

---------------------------------------------
        TCP/IP SUBNET MASK EQUIVALENTS
---------------------------------------------
CIDR = .....................: /18
Netmask = ..................: 255.255.192.0
Netmask (hex) = ............: 0xffffc000
Wildcard Bits = ............: 0.0.63.255
Usable IP Addresses = ......: 16,382

System:>  whatmask 0xffffffe0

---------------------------------------------
        TCP/IP SUBNET MASK EQUIVALENTS
---------------------------------------------
CIDR = .....................: /27
Netmask = ..................: 255.255.255.224
Netmask (hex) = ............: 0xffffffe0
Wildcard Bits = ............: 0.0.0.31
Usable IP Addresses = ......: 30

System:>  whatmask 0.0.0.31

---------------------------------------------
        TCP/IP SUBNET MASK EQUIVALENTS
---------------------------------------------
CIDR = .....................: /27
Netmask = ..................: 255.255.255.224
Netmask (hex) = ............: 0xffffffe0
Wildcard Bits = ............: 0.0.0.31
Usable IP Addresses = ......: 30

System:>  whatmask 192.168.165.23/19

------------------------------------------------
                TCP/IP NETWORK INFORMATION
------------------------------------------------
IP Entered = ..................: 192.168.165.23
CIDR = ........................: /19
Netmask = .....................: 255.255.224.0
Netmask (hex) = ...............: 0xffffe000
Wildcard Bits = ...............: 0.0.31.255
------------------------------------------------
Network Address = .............: 192.168.160.0
Broadcast Address = ...........: 192.168.191.255
Usable IP Addresses = .........: 8,190
First Usable IP Address = .....: 192.168.160.1
Last Usable IP Address = ......: 192.168.191.254

System:>  whatmask 192.168.0.13/255.255.255.0

------------------------------------------------
                TCP/IP NETWORK INFORMATION
------------------------------------------------
IP Entered = ..................: 192.168.0.13
CIDR = ........................: /24
Netmask = .....................: 255.255.255.0
Netmask (hex) = ...............: 0xffffff00
Wildcard Bits = ...............: 0.0.0.255
------------------------------------------------
Network Address = .............: 192.168.0.0
Broadcast Address = ...........: 192.168.0.255
Usable IP Addresses = .........: 254
First Usable IP Address = .....: 192.168.0.1
Last Usable IP Address = ......: 192.168.0.254

System:>  whatmask 192.168.0.113/0xffffffe0

------------------------------------------------
                TCP/IP NETWORK INFORMATION
------------------------------------------------
IP Entered = ..................: 192.168.0.113
CIDR = ........................: /27
Netmask = .....................: 255.255.255.224
Netmask (hex) = ...............: 0xffffffe0
Wildcard Bits = ...............: 0.0.0.31
------------------------------------------------
Network Address = .............: 192.168.0.96
Broadcast Address = ...........: 192.168.0.127
Usable IP Addresses = .........: 30
First Usable IP Address = .....: 192.168.0.97
Last Usable IP Address = ......: 192.168.0.126

System:>  whatmask 192.168.0.169/0.0.0.127

------------------------------------------------
                TCP/IP NETWORK INFORMATION
------------------------------------------------
IP Entered = ..................: 192.168.0.169
CIDR = ........................: /25
Netmask = .....................: 255.255.255.128
Netmask (hex) = ...............: 0xffffff80
Wildcard Bits = ...............: 0.0.0.127
------------------------------------------------
Network Address = .............: 192.168.0.128
Broadcast Address = ...........: 192.168.0.255
Usable IP Addresses = .........: 126
First Usable IP Address = .....: 192.168.0.129
Last Usable IP Address = ......: 192.168.0.254