Difference between revisions of "CIDR Notation"
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| Line 8: | Line 8: | ||
|- | |- | ||
| 255.255.255.255 | | 255.255.255.255 | ||
| − | | | + | | 32 |
| 1 | | 1 | ||
| 1 | | 1 | ||
| Line 14: | Line 14: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.255.254 | | 255.255.255.254 | ||
| − | | | + | | 31 |
| 2 | | 2 | ||
| 2* | | 2* | ||
| Line 20: | Line 20: | ||
|- | |- | ||
| 255.255.255.252 | | 255.255.255.252 | ||
| − | | | + | | 30 |
| 4 | | 4 | ||
| 2 | | 2 | ||
| Line 26: | Line 26: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.255.248 | | 255.255.255.248 | ||
| − | | | + | | 29 |
| 8 | | 8 | ||
| 6 | | 6 | ||
| Line 32: | Line 32: | ||
|- | |- | ||
| 255.255.255.240 | | 255.255.255.240 | ||
| − | | | + | | 28 |
| 16 | | 16 | ||
| 14 | | 14 | ||
| Line 38: | Line 38: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.255.224 | | 255.255.255.224 | ||
| − | | | + | | 27 |
| 32 | | 32 | ||
| 30 | | 30 | ||
| Line 44: | Line 44: | ||
|- | |- | ||
| 255.255.255.192 | | 255.255.255.192 | ||
| − | | | + | | 26 |
| 64 | | 64 | ||
| 62 | | 62 | ||
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|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.255.128 | | 255.255.255.128 | ||
| − | | | + | | 25 |
| 128 | | 128 | ||
| 126 | | 126 | ||
| Line 56: | Line 56: | ||
|- | |- | ||
| 255.255.255.0 | | 255.255.255.0 | ||
| − | | | + | | 24 |
| 256 | | 256 | ||
| 254 | | 254 | ||
| Line 62: | Line 62: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.254.0 | | 255.255.254.0 | ||
| − | | | + | | 23 |
| 512 | | 512 | ||
| 510 | | 510 | ||
| Line 68: | Line 68: | ||
|- | |- | ||
| 255.255.252.0 | | 255.255.252.0 | ||
| − | | | + | | 22 |
| 1024 | | 1024 | ||
| 1022 | | 1022 | ||
| Line 74: | Line 74: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.248.0 | | 255.255.248.0 | ||
| − | | | + | | 21 |
| 2048 | | 2048 | ||
| 2046 | | 2046 | ||
| Line 80: | Line 80: | ||
|- | |- | ||
| 255.255.240.0 | | 255.255.240.0 | ||
| − | | | + | | 20 |
| 4096 | | 4096 | ||
| 4094 | | 4094 | ||
| Line 86: | Line 86: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.224.0 | | 255.255.224.0 | ||
| − | | | + | | 19 |
| 8192 | | 8192 | ||
| 8190 | | 8190 | ||
| Line 92: | Line 92: | ||
|- | |- | ||
| 255.255.192.0 | | 255.255.192.0 | ||
| − | | | + | | 18 |
| 16,384 | | 16,384 | ||
| 16,382 | | 16,382 | ||
| Line 98: | Line 98: | ||
|- style="background-color:#FCFCFC;" | |- style="background-color:#FCFCFC;" | ||
| 255.255.128.0 | | 255.255.128.0 | ||
| − | | | + | | 17 |
| 32,768 | | 32,768 | ||
| 32,766 | | 32,766 | ||
| Line 104: | Line 104: | ||
|- | |- | ||
| 255.255.0.0 | | 255.255.0.0 | ||
| − | | | + | | 16 |
| 65,536 | | 65,536 | ||
| 65,534 | | 65,534 | ||
| 256 | | 256 | ||
|} | |} | ||
Latest revision as of 09:05, 12 May 2022
| Subnet Mask | CIDR Prefix | Total IP Addresses | Usable IP Addresses | Number of /24 networks |
|---|---|---|---|---|
| 255.255.255.255 | 32 | 1 | 1 | 1/256th |
| 255.255.255.254 | 31 | 2 | 2* | 1/128th |
| 255.255.255.252 | 30 | 4 | 2 | 1/64th |
| 255.255.255.248 | 29 | 8 | 6 | 1/32nd |
| 255.255.255.240 | 28 | 16 | 14 | 1/16th |
| 255.255.255.224 | 27 | 32 | 30 | 1/8th |
| 255.255.255.192 | 26 | 64 | 62 | 1/4th |
| 255.255.255.128 | 25 | 128 | 126 | 1 half |
| 255.255.255.0 | 24 | 256 | 254 | 1 |
| 255.255.254.0 | 23 | 512 | 510 | 2 |
| 255.255.252.0 | 22 | 1024 | 1022 | 4 |
| 255.255.248.0 | 21 | 2048 | 2046 | 8 |
| 255.255.240.0 | 20 | 4096 | 4094 | 16 |
| 255.255.224.0 | 19 | 8192 | 8190 | 32 |
| 255.255.192.0 | 18 | 16,384 | 16,382 | 64 |
| 255.255.128.0 | 17 | 32,768 | 32,766 | 128 |
| 255.255.0.0 | 16 | 65,536 | 65,534 | 256 |
