Subnet Calculator

Sub-net Calculator built using java swing and eclipse swing window builder.

Sub-net idea : 

11111111.11111111.11100000.00000000 \19 11111111.11111111.11110000.00000000 \20 11111111.11111111.11111000.00000000 \21 11111111.11111111.11111100.00000000 \22 11111111.11111111.11111110.00000000 \23 11111111.11111111.11111111.00000000 \24 11111111.11111111.11111111.10000000 \25 11111111.11111111.11111111.11000000 \26 11111111.11111111.11111111.11100000 \27 11111111.11111111.11111111.11110000 \28 11111111.11111111.11111111.11111000 \29 11111111.11111111.11111111.11111100 \30 11111111.11111111.11111111.11111110 \31 11111111.11111111.11111111.11111111 \32

Give IP Address AND ( / OR Sub-net )

Get IP start, end, broadcast, network, etc.

IP

11000000.10101000.00000000.00000001 

Net-mask 

11111111.11111111.11111111.00000000 

Broadcast 

11000000.10101000.00000000.11111111 

First 

11000000.10101000.00000000.00000001 

Last 

11000000.10101000.00000000.11111110

192.168.0.1 /24 
broadcast 192.168.0.255 
network 192.168.0.1 
first usable address 192.168.0.1 
last usable address 192.168.0.254
255.255.255.0

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See The project on GITHUB ;)