| 1 classe A | 16 classe B | 256 classe C | |
|---|---|---|---|
| Network | 10.0.0.0 00001010000000000000000000000000 |
172.16.0.0 10101100000100000000000000000000 |
192.168.0.0 11000000101010000000000000000000 |
| Broadcast | 10.255.255.255 00001010111111111111111111111111 |
172.31.255.255 10101100000111111111111111111111 |
192.168.255.255 11000000101010001111111111111111 |
| Masq | 255.0.0.0 11111111000000000000000000000000 |
255.240.0.0 11111111111100000000000000000000 |
255.255.0.0 11111111111111110000000000000000 |
| Description | Single class A network 1x24 => "24-bit block" |
Set of 16 continuous class B network 16X16 => "20-bit block" |
Set of 256 continuous class C network 256x8 => "16-bit block" |
| Binary masq | Decimal masq | bit | Nr points |
|---|---|---|---|
| 11111111 11111111 11111111 11111100 | 255.255.255.252 | 30 | 2 |
| 11111111 11111111 11111111 11111000 | 255.255.255.248 | 29 | 6 |
| 11111111 11111111 11111111 11110000 | 255.255.255.240 | 28 | 14 |
| 11111111 11111111 11111111 11100000 | 255.255.255.224 | 27 | 30 |
| 11111111 11111111 11111111 11000000 | 255.255.255.192 | 26 | 62 |
| 11111111 11111111 11111111 10000000 | 255.255.255.128 | 25 | 126 |
| 11111111 11111111 11111111 00000000 | 255.255.255.0 | 24 | 254 |
| 11111111 11111111 11111110 00000000 | 255.255.254.0 | 23 | 510 |
| 11111111 11111111 11111100 00000000 | 255.255.252.0 | 22 | 1'022 |
| 11111111 11111111 11111000 00000000 | 255.255.248.0 | 21 | 2'046 |
| 11111111 11111111 11110000 00000000 | 255.255.240.0 | 20 | 4'094 |
| 11111111 11111111 11100000 00000000 | 255.255.224.0 | 19 | 8'190 |
| 11111111 11111111 11000000 00000000 | 255.255.192.0 | 18 | 16'382 |
| 11111111 11111111 10000000 00000000 | 255.255.128.0 | 17 | 32'766 |
| 11111111 11111111 00000000 00000000 | 255.255.0.0 | 16 | 65'534 |
| 11111111 11111110 00000000 00000000 | 255.254.0.0 | 15 | 131'070 |
| 11111111 11111100 00000000 00000000 | 255.252.0.0 | 14 | 262'142 |
| 11111111 11111000 00000000 00000000 | 255.248.0.0 | 13 | 524'286 |
| 11111111 11110000 00000000 00000000 | 255.240.0.0 | 12 | 1'048'574 |
| 11111111 11100000 00000000 00000000 | 255.224.0.0 | 11 | 2'097'150 |
| 11111111 11000000 00000000 00000000 | 255.192.0.0 | 10 | 4'194'302 |
| 11111111 10000000 00000000 00000000 | 255.128.0.0 | 9 | 8'388'606 |
| 11111111 00000000 00000000 00000000 | 255.0.0.0 | 8 | 16'777'214 |
| 11111110 00000000 00000000 00000000 | 254.0.0.0 | 7 | 33'554'430 |
| 11111100 00000000 00000000 00000000 | 252.0.0.0 | 6 | 67'108'862 |
| 11111000 00000000 00000000 00000000 | 248.0.0.0 | 5 | 134'217'726 |
| 11110000 00000000 00000000 00000000 | 240.0.0.0 | 4 | 268'435'454 |
| 11100000 00000000 00000000 00000000 | 224.0.0.0 | 3 | 536'870'910 |
| 11000000 00000000 00000000 00000000 | 192.0.0.0 | 2 | 1'073'741'822 |
| 10000000 00000000 00000000 00000000 | 128.0.0.0 | 1 | 2'147'483'646 |
| 00000000 00000000 00000000 00000000 | default | 0 | 4'294'967'294 |