Binary Power 2X
=
Octet Position
Binary Position
Value
Subnet Mask
CIDR Notation /
Subnet Mask
Decimal Value
16
65,536
15
32,768
14
16,384
13
12
8,192
4,096
3rd Octet
5
4
11
2,048
10
1,024
9
512
8
256
7
128
6
64
8
7
6
128
64
32
16
17
18
19
128
192
224
3
8
2
4
1
2
6
5
4
32
16
4th Octet
5
4
3
2
1
8
7
3
2
1
8
4
2
1
128
64
32
16
8
4
2
1
20
21
22
23
24
25
26
27
28
29
30
31
32
240
248
252
254
255
128
192
224
240
248
252
254
255
0
1