Difference between revisions of "Subnet mask cheat sheet"

From DevOps Notebook
(Created page with "{| class="wikitable" style="margin: 1em auto 1em auto;" |- ! Slash !! Netmask !! Wildcard Mask |- | /32 || 255.255.255.255 || 0.0.0.0 |- | /31 || 255.255.255.254 || 0.0.0.1 |-...")
 
 
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{| class="wikitable" style="margin: 1em auto 1em auto;"
 
{| class="wikitable" style="margin: 1em auto 1em auto;"
 
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! Slash !! Netmask !! Wildcard Mask
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! Slash !! Netmask !! Wildcard Mask !! Total IPs !! Usable IPs
 
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| /32 || 255.255.255.255 || 0.0.0.0
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| /32||255.255.255.255||0.0.0.0||1||1
 
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| /31 || 255.255.255.254 || 0.0.0.1
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| /31||255.255.255.254||0.0.0.1||2||0
 
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| /30 || 255.255.255.252 || 0.0.0.3
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| /30||255.255.255.252||0.0.0.3||4||2
 
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| /29 || 255.255.255.248 || 0.0.0.7
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| /29||255.255.255.248||0.0.0.7||8||6
 
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| /28 || 255.255.255.240 || 0.0.0.15
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| /28||255.255.255.240||0.0.0.15||16||14
 
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| /27 || 255.255.255.224 || 0.0.0.31
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| /27||255.255.255.224||0.0.0.31||32||30
 
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| /26 || 255.255.255.192 || 0.0.0.63
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| /26||255.255.255.192||0.0.0.63||64||62
 
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| /25 || 255.255.255.128 || 0.0.0.127
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| /25||255.255.255.128||0.0.0.127||128||126
 
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| /24 || 255.255.255.0 || 0.0.0.255
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| /24||255.255.255.0||0.0.0.255||256||254
 
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| /23 || 255.255.254.0 || 0.0.1.255
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| /23||255.255.254.0||0.0.1.255||512||510
 
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| /22 || 255.255.252.0 || 0.0.3.255
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| /22||255.255.252.0||0.0.3.255||1024||1022
 
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| /21 || 255.255.248.0 || 0.0.7.255
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| /21||255.255.248.0||0.0.7.255||2048||2046
 
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| /20 || 255.255.240.0 || 0.0.15.255
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| /20||255.255.240.0||0.0.15.255||4096||4094
 
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| /19 || 255.255.224.0 || 0.0.31.255
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| /19||255.255.224.0||0.0.31.255||8192||8190
 
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| /18 || 255.255.192.0 || 0.0.63.255
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| /18||255.255.192.0||0.0.63.255||16,384||16,382
 
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| /17 || 255.255.128.0 || 0.0.127.255
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| /17||255.255.128.0||0.0.127.255||32,768||32,766
 
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| /16 || 255.255.0.0 || 0.0.255.255
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| /16||255.255.0.0||0.0.255.255||65,536||65,534
 
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| /15 || 255.254.0.0 || 0.1.255.255
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| /15||255.254.0.0||0.1.255.255||131,072||131,070
 
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| /14 || 255.252.0.0 || 0.3.255.255
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| /14||255.252.0.0||0.3.255.255||262,144||262,142
 
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| /13 || 255.248.0.0 || 0.7.255.255
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| /13||255.248.0.0||0.7.255.255||524,288||524,286
 
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| /12 || 255.240.0.0 || 0.15.255.255
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| /12||255.240.0.0||0.15.255.255||1,048,576||1,048,574
 
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| /11 || 255.224.0.0 || 0.31.255.255
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| /11||255.224.0.0||0.31.255.255||2,097,152||2,097,150
 
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| /10 || 255.192.0.0 || 0.63.255.255
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| /10||255.192.0.0||0.63.255.255||4,194,304||4,194,302
 
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| /9 || 255.128.0.0 || 0.127.255.255
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| /9||255.128.0.0||0.127.255.255||8,388,608||8,388,606
 
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| /8 || 255.0.0.0 || 0.255.255.255
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| /8||255.0.0.0||0.255.255.255||16,777,216||16,777,214
 
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| /7 || 254.0.0.0 || 1.255.255.255
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| /7||254.0.0.0||1.255.255.255||33,554,432||33,554,430
 
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| /6 || 252.0.0.0 || 3.255.255.255
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| /6||252.0.0.0||3.255.255.255||67,108,864||67,108,862
 
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| /5 || 248.0.0.0 || 7.255.255.255
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| /5||248.0.0.0||7.255.255.255||134,217,728||134,217,726
 
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| /4 || 240.0.0.0 || 15.255.255.255
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| /4||240.0.0.0||15.255.255.255||268,435,456||268,435,454
 
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| /3 || 224.0.0.0 || 31.255.255.255
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| /3||224.0.0.0||31.255.255.255||536,870,912||536,870,910
 
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| /2 || 192.0.0.0 || 63.255.255.255
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| /2||192.0.0.0||63.255.255.255||1,073,741,824||1,073,741,822
 
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| /1 || 128.0.0.0 || 127.255.255.255
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| /1||128.0.0.0||127.255.255.255||2,147,483,648||2,147,483,646
 
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| /0 || 0.0.0.0 || 255.255.255.255
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| /0||0.0.0.0||255.255.255.255||4,294,967,296||4,294,967,294
 
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|}
 
|}

Latest revision as of 15:08, 20 March 2021

Slash Netmask Wildcard Mask Total IPs Usable IPs
/32 255.255.255.255 0.0.0.0 1 1
/31 255.255.255.254 0.0.0.1 2 0
/30 255.255.255.252 0.0.0.3 4 2
/29 255.255.255.248 0.0.0.7 8 6
/28 255.255.255.240 0.0.0.15 16 14
/27 255.255.255.224 0.0.0.31 32 30
/26 255.255.255.192 0.0.0.63 64 62
/25 255.255.255.128 0.0.0.127 128 126
/24 255.255.255.0 0.0.0.255 256 254
/23 255.255.254.0 0.0.1.255 512 510
/22 255.255.252.0 0.0.3.255 1024 1022
/21 255.255.248.0 0.0.7.255 2048 2046
/20 255.255.240.0 0.0.15.255 4096 4094
/19 255.255.224.0 0.0.31.255 8192 8190
/18 255.255.192.0 0.0.63.255 16,384 16,382
/17 255.255.128.0 0.0.127.255 32,768 32,766
/16 255.255.0.0 0.0.255.255 65,536 65,534
/15 255.254.0.0 0.1.255.255 131,072 131,070
/14 255.252.0.0 0.3.255.255 262,144 262,142
/13 255.248.0.0 0.7.255.255 524,288 524,286
/12 255.240.0.0 0.15.255.255 1,048,576 1,048,574
/11 255.224.0.0 0.31.255.255 2,097,152 2,097,150
/10 255.192.0.0 0.63.255.255 4,194,304 4,194,302
/9 255.128.0.0 0.127.255.255 8,388,608 8,388,606
/8 255.0.0.0 0.255.255.255 16,777,216 16,777,214
/7 254.0.0.0 1.255.255.255 33,554,432 33,554,430
/6 252.0.0.0 3.255.255.255 67,108,864 67,108,862
/5 248.0.0.0 7.255.255.255 134,217,728 134,217,726
/4 240.0.0.0 15.255.255.255 268,435,456 268,435,454
/3 224.0.0.0 31.255.255.255 536,870,912 536,870,910
/2 192.0.0.0 63.255.255.255 1,073,741,824 1,073,741,822
/1 128.0.0.0 127.255.255.255 2,147,483,648 2,147,483,646
/0 0.0.0.0 255.255.255.255 4,294,967,296 4,294,967,294
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