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Sub Net Table

Bits 1 2 3 4 5 6 7 8
Subnets 0 2 6 14 30 62 126 254
Mask 128 192 224 240 248 252 254 255
Class A /9 /10 /11 /12 /13 /14 /15 /16
Class B /17 /18 /19 /20 /21 /22 /23 /24
Class C /25 /26 /27 /28 /29 /30


Max Networks Class Number /First octet Max Host
Class A 255.Mask.0.0 127 1-127 16777214
Class B 255.255.Mask.0 16,383 128-191 65534
Class C 255.255.255.Mask 2,097,152 192-223 254

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