Calculating Networks, Hosts and Broadcast Addresses

134.77.168.143 / 27

134.77.168.143
255.255.255.224

Binary 
134     .   77   .   168  .   143
10000110.01001101.10101000.10001111
255    .    255    .   255   .   224
11111111.11111111.11111111.11100000

Like Bits = Network
10000110.01001101.10101000.100 00000  /27
134     .   77   .   168  .  128
Broadcast = All Bits on
10000110.01001101.1010100.100 11111  /27
134     .   77    .  168 .   159

First Usable = First Bit on
10000110.01001101.1010100.100 00001  /27
134     .   77   .   168  .  129
Last Usable
10000110.01001101.1010100.100 11110  /27
134     .   77   .   168 .     158

.128 64 32 16 8 4 2  1
.X     X  X  X X X X X