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Number converter: decimal => bin, hex |
Number converter: binary => dec, hex |
Number converter: Hex => dec, bin |
Mask Hosts Usable Netmask Hex Mask /30 4 2 255.255.255.252 fffffffc this is 1/64 of a Class C net /29 8 6 255.255.255.248 fffffff8 this is 1/32 of a Class C net /28 16 14 255.255.255.240 fffffff0 this is 1/16 of a Class C net /27 32 30 255.255.255.224 ffffffe0 this is 1/8 of a Class C net /26 64 62 255.255.255.192 ffffffc0 this is 1/4 of a Class C net /24 256 254 255.255.255.0 ffffff00 this is a Class C net /23 512 510 255.255.254.0 fffffe00 these are 2 Class C net /22 1024 1022 255.255.252.0 fffffc00 these are 4 Class C net /21 2048 2046 255.255.248.0 fffff800 these are 8 Class C net /20 4096 4094 255.255.240.0 fffff000 these are 16 Class C net /19 8192 8190 255.255.224.0 ffffe000 these are 32 Class C net /18 16384 16382 255.255.192.0 ffffc000 these are 64 Class C net /17 32768 32766 255.255.128.0 ffff8000 these are 128 Class C net /16 65536 65534 255.255.0.0 ffff0000 these are 256 Class C net = Class B net