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February 28, 2020 15:52
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CIDR chart
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| CIDR Total Number Network Description: | |
| Notation: of addresses: Mask: | |
| -------------------------------------------------------------------- | |
| /0 4,294,967,296 0.0.0.0 All Addresses | |
| /1 2,147,483,684 128.0.0.0 128 /8 networks | |
| /2 1,073,741,824 192.0.0.0 64 /8 networks | |
| /3 536,870,912 224.0.0.0 32 /8 networks | |
| /4 268,435,456 240.0.0.0 16 /8 networks | |
| /5 134,217,728 248.0.0.0 8 /8 networks | |
| /6 67,108,864 252.0.0.0 4 /8 networks | |
| /7 33,554,432 254.0.0.0 2 /8 networks | |
| /8 16,777,214 255.0.0.0 1 /8 network | |
| --------------------------------------------------------------------- | |
| /9 8,388,608 255.128.0.0 128 /16 networks | |
| /10 4,194,304 255.192.0.0 64 /16 networks | |
| /11 2,097,152 255.224.0.0 32 /16 networks | |
| /12 1,048,576 255.240.0.0 16 /16 networks | |
| /13 524,288 255.248.0.0 8 /16 networks | |
| /14 262,144 255.248.0.0 4 /16 networks | |
| /15 131,072 255.254.0.0 2 /16 networks | |
| /16 65,536 255.255.0.0 1 /16 network | |
| --------------------------------------------------------------------- | |
| /17 32,768 255.255.128.0 128 /24 networks | |
| /18 16,384 255.255.192.0 64 /24 networks | |
| /19 8,192 255.255.224.0 32 /24 networks | |
| /20 4,096 255.255.240.0 16 /24 networks | |
| /21 2,048 255.255.248.0 8 /24 networks | |
| /22 1,024 255.255.252.0 4 /24 networks | |
| /23 512 255.255.254.0 2 /24 networks | |
| /24 256 255.255.255.0 1 /24 network | |
| -------------------------------------------------------------------- | |
| /25 128 255.255.255.128 half of a /24 | |
| /26 64 255.255.255.192 fourth of a /24 | |
| /27 32 255.255.255.224 eighth of a /24 | |
| /28 16 255.255.255.240 1/16th of a /24 | |
| /29 8 255.255.255.248 6 usable addresses | |
| /30 4 255.255.255.252 2 usable addresses | |
| /31 2 255.255.255.254 used in P2P links | |
| /32 1 255.255.255.255 single host |
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