Subnet Mask

Class C IP Addresses (192-223).x.x.x
Quick Reference Table
 
255.255.255.128  
FF.FF.FF.80  
FF.FF.FF.1:0000000
nodes per network valid networks network address bit set address range broadcast address
126 valid 0 0 1-126 127
126 not valid 128 1 129-254 255
255.255.255.192  
FF.FF.FF.C0  
FF.FF.FF.11:000000
nodes per network valid networks network address bit set address range broadcast address
62 valid 0 00 1-62 63
62 valid 64 01 65-126 127
62 valid 128 10 129-190 191
62 not valid 192 11 193-254 255
255.255.255.224  
FF.FF.FF.E0  
FF.FF.FF.111:00000
nodes per network valid networks network address bit set address range broadcast address
30 valid 0 000 1-30 31
30 valid 32 001 33-62 63
30 valid 64 010 65-94 95
30 valid 96 011 97-126 127
30 valid 128 100 129-158 159
30 valid 160 010 161-190 191
30 valid 192 110 193-222 223
30 not valid 224 111 225-254 255
255.255.255.240  
FF.FF.FF.F0  
FF.FF.FF.1111:0000
nodes per network valid networks network address bit set address range broadcast address
14 valid 0 0000 1-14 15
14 valid 16 0001 17-30 31
14 valid 32 0010 33-46 47
14 valid 48 0011 49-62 63
14 valid 64 0100 65-78 79
14 valid 80 0101 81-94 95
14 valid 96 0110 97-110 111
14 valid 112 0111 113-126 127
14 valid 128 1000 129-142 143
14 valid 144 1001 145-158 159
14 valid 160 1010 161-174 175
14 valid 176 1011 178-190 191
14 valid 192 1100 193-206 207
14 valid 208 1101 209-222 223
14 valid 224 1110 225-238 239
14 not valid 240 1111 241-254 255
255.255.255.248  
FF.FF.FF.F8  
FF.FF.FF.11111:000
nodes per network valid networks network address bit set address range broadcast address
6 valid 0 00000 1-6 7
6 valid 8 00001 9-14 15
6 valid 16 00010 17-22 23
6 valid 24 00011 24-30 31
6 valid 32 00100 33-38 39
6 valid 40 00101 41-46 47
6 valid 48 00110 49-54 55
6 valid 56 00111 57-62 36
6 valid 64 01000 65-70 71
6 valid 72 01001 73-78 79
6 valid 80 01010 81-86 87
6 valid 88 01011 89-94 95
6 valid 96 01100 97-106 107
6 valid 108 01101 109-110 111
6 valid 112 01110 113-118 119
6 valid 120 01111 121-126 127
6 valid 128 10000 129-134 135
6 valid 136 10001 137-142 143
6 valid 144 10010 145-150 151
6 valid 152 10011 153-158 159
6 valid 160 10100 161-166 167
6 valid 168 10101 196-174 175
6 valid 176 10110 177-182 183
6 valid 184 10111 185-190 191
6 valid 192 11000 193-198 199
6 valid 200 11001 201-206 207
6 valid 208 11010 209-214 215
6 valid 216 11011 217-222 223
6 valid 224 11100 225-230 231
6 valid 232 11101 233-238 239
6 valid 240 11110 241-246 247
6 not valid 248 11111 249-254 255
255.255.255.252  
FF.FF.FF.FC  
FF.FF.FF.111111:00
nodes per network valid networks network address bit set address range broadcast address
2 valid 0 000000 1-2 3
2 valid 4 000001 5-6 7
2 valid 8 000010 9-10 11
2 valid 12 000011 13-14 15
2 valid 16 000100 17-18 19
2 valid 20 000101 21-22 23
2 valid 24 000110 25-26 27
2 valid 28 000111 29-30 31
2 valid 32 001000 33-34 35
2 valid 36 001001 37-38 39
2 valid 40 001010 41-42 43
2 valid 44 001011 45-46 47
2 valid 48 001100 49-50 51
2 valid 52 001101 53-54 55
2 valid 56 001110 57-58 59
2 valid 60 001111 61-62 63
2 valid 64 010000 65-66 67
2 valid 68 010001 69-70 71
2 valid 72 010010 73-74 75
2 valid 76 010011 77-78 79
2 valid 80 010100 81-82 83
2 valid 84 010101 58-86 87
2 valid 88 010110 89-90 91
2 valid 92 010111 93-94 95
2 valid 96 011000 97-98 99
2 valid 100 011001 101-102 103
2 valid 104 011010 105-106 107
2 valid 108 011011 109-110 111
2 valid 112 011100 113-114 115
2 valid 116 011101 117-118 119
2 valid 120 011110 121-122 123
2 valid 124 011111 125-126 127
2 valid 128 100000 129-130 131
2 valid 132 100001 133-134 135
2 valid 136 100010 137-138 139
2 valid 140 100011 141-142 143
2 valid 144 100100 145-146 147
2 valid 148 100101 149-150 151
2 valid 152 100110 153-154 155
2 valid 156 100111 157-158 159
2 valid 160 101000 161-162 163
2 valid 164 101001 165-166 167
2 valid 168 101010 169-170 171
2 valid 172 101011 173-174 175
2 valid 176 101100 177-178 179
2 valid 180 101101 181-182 183
2 valid 184 101110 185-186 187
2 valid 188 101111 189-190 191
2 valid 192 110000 193-194 195
2 valid 196 110001 197-198 199
2 valid 200 110010 201-202 203
2 valid 204 110011 205-206 207
2 valid 208 110100 209-210 211
2 valid 212 110101 213-214 215
2 valid 216 110110 217-218 219
2 valid 220 110111 221-222 223
2 valid 224 111000 225-226 227
2 valid 228 111001 229-230 231
2 valid 232 111010 233-234 235
2 valid 236 111011 237-238 239
2 valid 240 111100 241-242 243
2 valid 244 111101 245-246 247
2 valid 248 111110 249-250 251
2 not valid 252 111111 253-254 255