Subnet Masks
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| Prefix Format |
Decimal |
Available Host Addresses |
| /8 |
255.0.0.0 |
16777214 |
| /9 |
255.128.0.0 |
8388606 |
| /10 |
255.192.0.0 |
4194302 |
| /11 |
255.224.0.0 |
2097150 |
| /12 |
255.240.0.0 |
1048574 |
| /13 |
255.248.0.0 |
524286 |
| /14 |
255.252.0.0 |
262142 |
| /15 |
255.254.0.0 |
131070 |
| /16 |
255.255.0.0 |
65534 |
| /17 |
255.255.128.0 |
32766 |
| /18 |
255.255.192.0 |
16382 |
| /19 |
255.255.224.0 |
8190 |
| /20 |
255.255.240.0 |
4094 |
| /21 |
255.255.248.0 |
2046 |
| /22 |
255.255.252.0 |
1022 |
| /23 |
255.255.254.0 |
510 |
| /24 |
255.255.255.0 |
254 |
| /25 |
255.255.255.128 |
126 |
| /26 |
255.255.255.192 |
62 |
| /27 |
255.255.255.224 |
30 |
| /28 |
255.255.255.240 |
14 |
| /29 |
255.255.255.248 |
6 |
| /30 |
255.255.255.252 |
2 |