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| Netmask |
Inverse |
/CIDR |
Usable IP Addresses |
| 0.0.0.0 |
255.255.255.255 |
/0 |
4,294,967,294 |
| 128.0.0.0 |
127.255.255.255 |
/1 |
2,147,483,646 |
| 192.0.0.0 |
63.255.255.255 |
/2 |
1,073,741,822 |
| 224.0.0.0 |
31.255.255.255 |
/3 |
536,870,910 |
| 240.0.0.0 |
15.255.255.255 |
/4 |
268,435,454 |
| 248.0.0.0 |
7.255.255.255 |
/5 |
134,217,726 |
| 252.0.0.0 |
3.255.255.255 |
/6 |
67,108,862 |
| 254.0.0.0 |
1.255.255.255 |
/7 |
33,554,430 |
| 255.0.0.0 |
0.255.255.255 |
/8 |
16,777,214 |
| 255.128.0.0 |
0.127.255.255 |
/9 |
8,388,606 |
| 255.192.0.0 |
0.63.255.255 |
/10 |
4,194,302 |
| 255.224.0.0 |
0.31.255.255 |
/11 |
2,097,150 |
| 255.240.0.0 |
0.15.255.255 |
/12 |
1,048,574 |
| 255.248.0.0 |
0.7.255.255 |
/13 |
524,286 |
| 255.252.0.0 |
0.3.255.255 |
/14 |
262,142 |
| 255.254.0.0 |
0.1.255.255 |
/15 |
131,070 |
| 255.255.0.0 |
0.0.255.255 |
/16 |
65,534 |
| 255.255.128.0 |
0.0.127.255 |
/17 |
32,766 |
| 255.255.192.0 |
0.0.63.255 |
/18 |
16,382 |
| 255.255.224.0 |
0.0.31.255 |
/19 |
8,190 |
| 255.255.240.0 |
0.0.15.255 |
/20 |
4,094 |
| 255.255.248.0 |
0.0.7.255 |
/21 |
2,046 |
| 255.255.252.0 |
0.0.3.255 |
/22 |
1,022 |
| 255.255.254.0 |
0.0.1.255 |
/23 |
510 |
| 255.255.255.0 |
0.0.0.255 |
/24 |
254 |
| 255.255.255.128 |
0.0.0.127 |
/25 |
126 |
| 255.255.255.192 |
0.0.0.63 |
/26 |
62 |
| 255.255.255.224 |
0.0.0.31 |
/27 |
30 |
| 255.255.255.240 |
0.0.0.15 |
/28 |
14 |
| 255.255.255.248 |
0.0.0.7 |
/29 |
6 |
| 255.255.255.252 |
0.0.0.3 |
/30 |
2 |
| 255.255.255.254 |
0.0.0.1 |
/31 |
0 |
| 255.255.255.255 |
0.0.0.0 |
/32 |
1 |