CIDR
Беcклассовая адресация (англ. Classless InterDomain Routing, англ. CIDR) — метод IP-адресации, позволяющий гибко управлять пространством IP-адресов, не используя жёсткие рамки классовой адресации. Использование этого метода позволяет экономно использовать конечный ресурс IP-адресов.
Беcклассовая адресация основывается на переменной длине маски подсети (англ. Variable Length Subnet Mask — VLSM), в то время, как в классовой адресации длина маски строго фиксирована 0, 1, 2 или 3 установленными байтами. Пример записи диапазона IP-адресов с применением беcклассовой адресации: 10.1.2.32/27 (диапазон 10.1.2.32 — 10.1.2.63).
Диапазоны CIDR (IPv4)Править
| CIDR | Начало диапазона | Конец диапазона | Всего IP-адресов | Используемые байты |
|---|---|---|---|---|
| 69.208.0.0/0 | 0.0.0.0 | 255.255.255.255 | 4,294,967,296 | ********.********.********.******** |
| 69.208.0.0/1 | 0.0.0.0 | 127.255.255.255 | 2,147,483,648 | 0*******.********.********.******** |
| 69.208.0.0/2 | 64.0.0.0 | 127.255.255.255 | 1,073,741,824 | 01******.********.********.******** |
| 69.208.0.0/3 | 64.0.0.0 | 95.255.255.255 | 536,870,912 | 010*****.********.********.******** |
| 69.208.0.0/4 | 64.0.0.0 | 79.255.255.255 | 268,435,456 | 0100****.********.********.******** |
| 69.208.0.0/5 | 64.0.0.0 | 71.255.255.255 | 134,217,728 | 01000***.********.********.******** |
| 69.208.0.0/6 | 68.0.0.0 | 71.255.255.255 | 67,108,864 | 010001**.********.********.******** |
| 69.208.0.0/7 | 68.0.0.0 | 69.255.255.255 | 33,554,432 | 0100010*.********.********.******** |
| 69.208.0.0/8 | 69.0.0.0 | 69.255.255.255 | 16,581,375 | 01000101.********.********.******** |
| 69.208.0.0/9 | 69.128.0.0 | 69.255.255.255 | 8,388,608 | 01000101.1*******.********.******** |
| 69.208.0.0/10 | 69.192.0.0 | 69.255.255.255 | 4,194,304 | 01000101.11******.********.******** |
| 69.208.0.0/11 | 69.208.0.0 | 69.238.255.255 | 2,097,152 | 01000101.110*****.********.******** |
| 69.208.0.0/12 | 69.208.0.0 | 69.223.255.255 | 1,048,576 | 01000101.1101****.********.******** |
| 69.208.0.0/13 | 69.208.0.0 | 69.215.255.255 | 524,288 | 01000101.11010***.********.******** |
| 69.208.0.0/14 | 69.208.0.0 | 69.211.255.255 | 262,144 | 01000101.110100**.********.******** |
| 69.208.0.0/15 | 69.208.0.0 | 69.209.255.255 | 131,072 | 01000101.1101000*.********.******** |
| 69.208.0.0/16 | 69.208.0.0 | 69.208.255.255 | 65,536 | 01000101.11010000.********.******** |
| 69.208.0.0/17 | 69.208.0.0 | 69.208.127.255 | 32,768 | 01000101.11010000.0*******.******** |
| 69.208.0.0/18 | 69.208.0.0 | 69.208.63.255 | 16,384 | 01000101.11010000.00******.******** |
| 69.208.0.0/19 | 69.208.0.0 | 69.208.31.255 | 8,192 | 01000101.11010000.000*****.******** |
| 69.208.0.0/20 | 69.208.0.0 | 69.208.15.255 | 4,096 | 01000101.11010000.0000****.******** |
| 69.208.0.0/21 | 69.208.0.0 | 69.208.7.255 | 2,048 | 01000101.11010000.00000***.******** |
| 69.208.0.0/22 | 69.208.0.0 | 69.208.3.255 | 1,024 | 01000101.11010000.000000**.******** |
| 69.208.0.0/23 | 69.208.0.0 | 69.208.1.255 | 512 | 01000101.11010000.0000000*.******** |
| 69.208.0.0/24 | 69.208.0.0 | 69.208.0.255 | 256 | 01000101.11010000.00000000.******** |
| 69.208.0.0/25 | 69.208.0.0 | 69.208.0.127 | 128 | 01000101.11010000.00000000.0******* |
| 69.208.0.0/26 | 69.208.0.0 | 69.208.0.63 | 64 | 01000101.11010000.00000000.00****** |
| 69.208.0.0/27 | 69.208.0.0 | 69.208.0.31 | 32 | 01000101.11010000.00000000.000***** |
| 69.208.0.0/28 | 69.208.0.0 | 69.208.0.15 | 16 | 01000101.11010000.00000000.0000**** |
| 69.208.0.0/29 | 69.208.0.0 | 69.208.0.7 | 8 | 01000101.11010000.00000000.00000*** |
| 69.208.0.0/30 | 69.208.0.0 | 69.208.0.3 | 4 | 01000101.11010000.00000000.000000** |
| 69.208.0.0/31 | 69.208.0.0 | 69.208.0.1 | 2 | 01000101.11010000.00000000.0000000* |
| 69.208.0.0/32 | 69.208.0.0 | 69.208.0.0 | 1 | 01000101.11010000.00000000.00000000 |