00000000 = 0 01000000 = 64 10000000 = 128 11000000 = 192 00000001 = 1 01000001 = 65 10000001 = 129 11000001 = 193 00000010 = 2 01000010 = 66 10000010 = 130 11000010 = 194 00000011 = 3 01000011 = 67 10000011 = 131 11000011 = 195 00000100 = 4 01000100 = 68 10000100 = 132 11000100 = 196 00000101 = 5 01000101 = 69 10000101 = 133 11000101 = 197 00000110 = 6 01000110 = 70 10000110 = 134 11000110 = 198 00000111 = 7 01000111 = 71 10000111 = 135 11000111 = 199 00001000 = 8 01001000 = 72 10001000 = 136 11001000 = 200 00001001 = 9 01001001 = 73 10001001 = 137 11001001 = 201 00001010 = 10 01001010 = 74 10001010 = 138 11001010 = 202 00001011 = 11 01001011 = 75 10001011 = 139 11001011 = 203 00001100 = 12 01001100 = 76 10001100 = 140 11001100 = 204 00001101 = 13 01001101 = 77 10001101 = 141 11001101 = 205 00001110 = 14 01001110 = 78 10001110 = 142 11001110 = 206 00001111 = 15 01001111 = 79 10001111 = 143 11001111 = 207 00010000 = 16 01010000 = 80 10010000 = 144 11010000 = 208 00010001 = 17 01010001 = 81 10010001 = 145 11010001 = 209 00010010 = 18 01010010 = 82 10010010 = 146 11010010 = 210 00010011 = 19 01010011 = 83 10010011 = 147 11010011 = 211 00010100 = 20 01010100 = 84 10010100 = 148 11010100 = 212 00010101 = 21 01010101 = 85 10010101 = 149 11010101 = 213 00010110 = 22 01010110 = 86 10010110 = 150 11010110 = 214 00010111 = 23 01010111 = 87 10010111 = 151 11010111 = 215 00011000 = 24 01011000 = 88 10011000 = 152 11011000 = 216 00011001 = 25 01011001 = 89 10011001 = 153 11011001 = 217 00011010 = 26 01011010 = 90 10011010 = 154 11011010 = 218 00011011 = 27 01011011 = 91 10011011 = 155 11011011 = 219 00011100 = 28 01011100 = 92 10011100 = 156 11011100 = 220 00011101 = 29 01011101 = 93 10011101 = 157 11011101 = 221 00011110 = 30 01011110 = 94 10011110 = 158 11011110 = 222 00011111 = 31 01011111 = 95 10011111 = 159 11011111 = 223 00100000 = 32 01100000 = 96 10100000 = 160 11100000 = 224 00100001 = 33 01100001 = 97 10100001 = 161 11100001 = 225 00100010 = 34 01100010 = 98 10100010 = 162 11100010 = 226 00100011 = 35 01100011 = 99 10100011 = 163 11100011 = 227 00100100 = 36 01100100 = 100 10100100 = 164 11100100 = 228 00100101 = 37 01100101 = 101 10100101 = 165 11100101 = 229 00100110 = 38 01100110 = 102 10100110 = 166 11100110 = 230 00100111 = 39 01100111 = 103 10100111 = 167 11100111 = 231 00101000 = 40 01101000 = 104 10101000 = 168 11101000 = 232 00101001 = 41 01101001 = 105 10101001 = 169 11101001 = 233 00101010 = 42 01101010 = 106 10101010 = 170 11101010 = 234 00101011 = 43 01101011 = 107 10101011 = 171 11101011 = 235 00101100 = 44 01101100 = 108 10101100 = 172 11101100 = 236 00101101 = 45 01101101 = 109 10101101 = 173 11101101 = 237 00101110 = 46 01101110 = 110 10101110 = 174 11101110 = 238 00101111 = 47 01101111 = 111 10101111 = 175 11101111 = 239 00110000 = 48 01110000 = 112 10110000 = 176 11110000 = 240 00110001 = 49 01110001 = 113 10110001 = 177 11110001 = 241 00110010 = 50 01110010 = 114 10110010 = 178 11110010 = 242 00110011 = 51 01110011 = 115 10110011 = 179 11110011 = 243 00110100 = 52 01110100 = 116 10110100 = 180 11110100 = 244 00110101 = 53 01110101 = 117 10110101 = 181 11110101 = 245 00110110 = 54 01110110 = 118 10110110 = 182 11110110 = 246 00110111 = 55 01110111 = 119 10110111 = 183 11110111 = 247 00111000 = 56 01111000 = 120 10111000 = 184 11111000 = 248 00111001 = 57 01111001 = 121 10111001 = 185 11111001 = 259 00111010 = 58 01111010 = 122 10111010 = 186 11111010 = 250 00111011 = 59 01111011 = 123 10111011 = 187 11111011 = 251 00111100 = 60 01111100 = 124 10111100 = 188 11111100 = 252 00111101 = 61 01111101 = 125 10111101 = 189 11111101 = 253 00111110 = 62 01111110 = 126 10111110 = 190 11111110 = 254 00111111 = 63 01111111 = 127 10111111 = 191 11111111 = 255 netmasks /8 = 255.0.0.0 = 2^24 (16777216) available addresses /9 = 255.128.0.0 = 2^23 (8388608) available addresses /10 = 255.192.0.0 = 2^22 (4194304) available addresses /11 = 255.224.0.0 = 2^21 (2097152) available addresses /12 = 255.240.0.0 = 2^20 (1048576) available addresses /13 = 255.248.0.0 = 2^19 (524288) available addresses /14 = 255.252.0.0 = 2^18 (262144) available addresses /15 = 255.254.0.0 = 2^17 (131072) available addresses /16 = 255.255.0.0 = 2^16 (65536) available addresses /17 = 255.255.128.0 = 2^15 (32768) available addresses /18 = 255.255.192.0 = 2^14 (16384) available addresses /19 = 255.255.224.0 = 2^13 (8192) available addresses /20 = 255.255.240.0 = 2^12 (4096) available addresses /21 = 255.255.248.0 = 2^11 (2048) available addresses /22 = 255.255.252.0 = 2^10 (1024) available addresses /23 = 255.255.254.0 = 2^9 (512) available addresses /24 = 255.255.255.0 = 2^8 (256) available addresses /25 = 255.255.255.128 = 2^7 (128) available addresses /26 = 255.255.255.192 = 2^6 (64) available addresses /27 = 255.255.255.224 = 2^5 (32) available addresses /28 = 255.255.255.240 = 2^4 (16) available addresses /29 = 255.255.255.248 = 2^3 (8) available addresses /30 = 255.255.255.252 = 2^2 (4) available addresses On each network 2 of the available addresses are reserved All 0's = network address All 1's = directed broadcast address Cisco wildcard equivalents CIDR Dotted quad netmask Cisco Wildcard /8 = 255.0.0.0 = 0.255.255.255 /9 = 255.128.0.0 = 0.127.255.255 /10 = 255.192.0.0 = 0.63.255.255 /11 = 255.224.0.0 = 0.31.255.255 /12 = 255.240.0.0 = 0.15.255.255 /13 = 255.248.0.0 = 0.7.255.255 /14 = 255.252.0.0 = 0.3.255.255 /15 = 255.254.0.0 = 0.1.255.255 /16 = 255.255.0.0 = 0.0.255.255 /17 = 255.255.128.0 = 0.0.127.255 /18 = 255.255.192.0 = 0.0.63.255 /19 = 255.255.224.0 = 0.0.31.255 /20 = 255.255.240.0 = 0.0.15.255 /21 = 255.255.248.0 = 0.0.7.255 /22 = 255.255.252.0 = 0.0.3.255 /23 = 255.255.254.0 = 0.0.1.255 /24 = 255.255.255.0 = 0.0.0.255 /25 = 255.255.255.128 = 0.0.0.127 /26 = 255.255.255.192 = 0.0.0.63 /27 = 255.255.255.224 = 0.0.0.31 /28 = 255.255.255.240 = 0.0.0.15 /29 = 255.255.255.248 = 0.0.0.7 /30 = 255.255.255.252 = 0.0.0.3