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HomeFrequently Asked QuestionsTechnicalIP subnet cheat sheet
Here is a full list of all subnets and the amount of IPs for each one. Slash 29 for example has 8 total IPs and 6 usable. (The bold number is the total IPs for that slash network)
/32 255.255.255.255 0.0.0.0 1 1/31 255.255.255.254 0.0.0.1 2 2/30 255.255.255.252 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 1,024 1,022/21 255.255.248.0 0.0.7.255 2,048 2,046/20 255.255.240.0 0.0.15.255 4,096 4,094/19 255.255.224.0 0.0.31.255 8,192 8,190/18 255.255.192.0 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 4,294,9
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