IPv4 Subnet Mask Cheat Sheet
Prefix IP Addresses Subnet Mask Bits /32 1 255.255.255.255 0 /31 2 255.255.255.254 1 /30 4 255.255.255.252 2 /29 8 255.255.255.248 3 /28 16 255.255.255.240 4 /27 32 255.255.255.224 5 /26 64 255.255.255.192 6 /25 128 255.255.255.128 7 /24 256 255.255.255.0 8 /23 512 255.255.254.0 9 /22 1,024 255.255.252.0 10 /21 2,048 255.255.248.0 11 /20 … Read more