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| CIDR Length |
Mask |
# Networks |
# Hosts |
| /1 |
128.0.0.0 |
128 A |
2,147,483,392 |
| /2 |
192.0.0.0 |
64 A |
1,073,741,696 |
| /3 |
224.0.0.0 |
32 A |
536,870,848 |
| /4 |
240.0.0.0 |
16 A |
268,435,424 |
| /5 |
248.0.0.0 |
8 A |
134,217,712 |
| /6 |
252.0.0.0 |
4 A |
67,108,856 |
| /7 |
254.0.0.0 |
2 A |
33,554,428 |
| /8 |
255.0.0.0 |
1 A |
16,777,214 |
| /9 |
255.128.0.0 |
128 B |
8,388,352 |
| /10 |
255.192.0.0 |
64 B |
4,194,176 |
| /11 |
255.224.0.0 |
32 B |
2,097,088 |
| /12 |
255.240.0.0 |
16 B |
1,048,544 |
| /13 |
255.248.0.0 |
8 B |
524,272 |
| /14 |
255.252.0.0 |
4 B |
262,136 |
| /15 |
255.254.0.0 |
2 B |
131,068 |
| /16 |
255.255.0.0 |
1 B |
65,024 |
| /17 |
255.255.128.0 |
128 C |
32,512 |
| /18 |
255.255.192.0 |
64 C |
16,256 |
| /19 |
255.255.224.0 |
32 C |
8,128 |
| /20 |
255.255.240.0 |
16 C |
4,064 |
| /21 |
255.255.248.0 |
8 C |
2,032 |
| /22 |
255.255.252.0 |
4 C |
1,016 |
| /23 |
255.255.254.0 |
2 C |
508 |
| /24 |
255.255.255.0 |
1 C |
254 |
| /25 |
255.255.255.128 |
2 subnets |
124 |
| /26 |
255.255.255.192 |
4 subnets |
62 |
| /27 |
255.255.255.224 |
8 subnets |
30 |
| /28 |
255.255.255.240 |
16 subnets |
14 |
| /29 |
255.255.255.248 |
32 subnets |
6 |
| /30 |
255.255.255.252 |
64 subnets |
2 |
| /31 |
255.255.255.254 |
none |
none |
| /32 |
255.255.255.255 |
1/256 C |
1 |