/25 - Subnet Mask: 255.255.255.128; subnet bits: x.x.x.10000000; # of subnets: 21=2, /26 - Subnet Mask: 255.255.255.192; subnet bits: x.x.x.11000000; # of subnets: 22=4, /27 - Subnet Mask: 255.255.255.224; subnet bits: x.x.x.11100000; # of subnets: 23=8, /28 - Subnet Mask: 255.255.255.240; subnet bits: x.x.x.11110000; # of subnets: 24=16, /29 - Subnet Mask: 255.255.255.248; subnet bits: x.x.x.11111000; # of subnets: 25=32, /30 - Subnet Mask: 255.255.255.252; subnet bits: x.x.x.11111100; # of subnets: 26=64, /31 - Subnet Mask: 255.255.255.254; subnet bits: x.x.x.11111110; # of subnets: 27=128,

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