Sufix - Maske - Max IPs

/29 - / - 8
/28 - / - 16
/27 - / - 32
/26 - / - 64
/25 - 255.255.255.128 - 128
/24 - 255.255.255.0 - 255
/23 - 255.255.254.0 - 511
/22 - 255.255.252.0 - 1024
/21 - 255.255.248.0 - 2048
/20



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bsp. /21 -> 21x 1

Dez - Binär - Anzahl 1
255 - 1111 1111 - 8 
255 - 1111 1111 - 8
248 - 1111 1000 - 5
 
 
 
 128|64|32|16 | 8|4|2|1