Table 1. Decimal Equivalents for Netmasking
128 64 32 16 8 4 2 1
decimal
1 0 0 0 0 0 0 0
128
1 1 0 0 0 0 0 0
192
1 1 1 0 0 0 0 0
224
1 1 1 1 0 0 0 0
240
1 1 1 1 1 0 0 0
248
1 1 1 1 1 1 0 0
252
1 1 1 1 1 1 1 0
254
1 1 1 1 1 1 1 1
255