Figure 7: Available divisions according to last byte bits

The variable portions that represent the bits used for the host portion are identified by the letter V.

Last Byte bit values

8  7  6  5  4  3  2  1  Divisions   Subnets   Hosts/Subnets

----------------------------------------------------------------

F  V  V  V  V  V  V  V      2          0           0

F  F  V  V  V  V  V  V      4          2          62

F  F  F  V  V  V  V  V      8          6          30

F  F  F  F  V  V  V  V     16         14          14

F  F  F  F  F  V  V  V     32         30           6

F  F  F  F  F  F  V  V     64         62           2

F  F  F  F  F  F  F  V    128        126           0