Adresacja IP
| Maska | /xx | Klasa | Ilość IP |
|---|---|---|---|
| 255.0.0.0 | /8 | A | 16777216 |
| 255.128.0.0 | /9 | A | 8388608 |
| 255.192.0.0 | /10 | A | 4194304 |
| 255.224.0.0 | /11 | A | 2097152 |
| 255.240.0.0 | /12 | A | 1048576 |
| 255.248.0.0 | /13 | A | 524288 |
| 255.252.0.0 | /14 | A | 262144 |
| 255.254.0.0 | /15 | A | 131072 |
| 255.255.0.0 | /16 | B | 65536 |
| 255.255.128.0 | /17 | B | 32768 |
| 255.255.192.0 | /18 | B | 16384 |
| 255.255.224.0 | /19 | B | 8192 |
| 255.255.240.0 | /20 | B | 4096 |
| 255.255.248.0 | /21 | B | 2048 |
| 255.255.252.0 | /22 | B | 1024 |
| 255.255.254.0 | /23 | B | 512 |
| 255.255.255.0 | /24 | C | 256 |
| 255.255.255.128 | /25 | C | 128 |
| 255.255.255.192 | /26 | C | 64 |
| 255.255.255.224 | /27 | C | 32 |
| 255.255.255.240 | /28 | C | 16 |
| 255.255.255.248 | /29 | C | 8 |
| 255.255.255.252 | /30 | C | 4 |
| 255.255.255.254 | /31 | C | 2 |
| 255.255.255.255 | /32 | C | 1 |