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Jon's Subnet Cheat Sheet

This information was originally compiled by Bruce Smith. I just happened to find it  useful and kept referring to it, so I stuck it here. Thanks Bruce :-)

Subnet MaskShortcut SubnetsHosts
255.255.255.0 /24 1 254
Network AddressStart Host End HostBroadcast
0 1 254 255

Subnet MaskShortcut SubnetsHosts
255.255.255.128 /25 2 126
Network AddressStart Host End HostBroadcast
0 1 126 127
128 129 254 255

Subnet MaskShortcut SubnetsHosts
255.255.255.192 /26 4 62
Network AddressStart Host End HostBroadcast
0 1 62 63
64 65 126 127
128 129 190 191
192 193 254 255

Subnet MaskShortcut SubnetsHosts
255.255.255.224 /27 8 30
Network AddressStart Host End HostBroadcast
0 1 30 31
32 33 62 63
64 65 94 95
96 97 126 127
128 129 158 159
160 161 190 191
192 193 222 223
224 225 254 255

Subnet MaskShortcut SubnetsHosts
255.255.255.240 /28 16 14
Network AddressStart Host End HostBroadcast
0 1 14 15
16 17 30 31
32 33 46 47
48 49 62 63
64 65 78 79
80 81 94 95
96 97 110 111
112 113 126 127
128 129 142 143
144 145 158 159
160 161 174 175
176 177 190 191
192 193 206 207
208 209 222 223
224 225 238 239
240 241 254 255

Subnet MaskShortcut SubnetsHosts
255.255.255.248 /29 32 6
Network AddressStart Host End HostBroadcast
0 1 6 7
8 9 14 15
16 17 22 23
24 25 30 31
32 33 38 39
40 41 46 47
48 49 54 55
56 57 62 63
64 65 70 71
72 73 78 79
80 81 86 87
88 89 94 95
96 97 102 103
104 105 110 111
112 113 118 119
120 121 126 127
128 129 134 135
136 137 142 143
144 145 150 151
152 153 158 159
160 161 166 167
168 169 174 175
176 177 182 183
184 185 190 191
192 193 198 199
200 201 206 207
208 209 214 215
216 217 222 223
224 225 230 231
232 233 238 239
240 241 246 247
248 249 254 255

Subnet MaskShortcut SubnetsHosts
255.255.255.252 /30 64 2
Network AddressStart Host End HostBroadcast
0 1 2 3
4 5 6 7
8 9 10 11
12 13 14 15
16 17 18 19
20 21 22 23
24 25 26 27
28 29 30 31
32 33 34 35
36 37 38 39
40 41 42 43
44 45 46 47
48 49 50 51
52 53 54 55
56 57 58 59
60 61 62 63
64 65 66 67
68 69 70 71
72 73 74 75
76 77 78 79
80 81 82 83
84 85 86 87
88 89 90 91
92 93 94 95
96 97 98 99
100 101 102 103
104 105 106 107
108 109 110 111
112 113 114 115
116 117 118 119
120 121 122 123
124 125 126 127
128 129 130 131
132 133 134 135
136 137 138 139
140 141 142 143
144 145 146 147
148 149 150 151
152 153 154 155
156 157 158 159
160 161 162 163
164 165 166 167
168 169 170 171
172 173 174 175
176 177 178 179
180 181 182 183
184 185 186 187
188 189 190 191
192 193 194 195
196 197 198 199
200 201 202 203
204 205 206 207
208 209 210 211
212 213 214 215
216 217 218 219
220 221 222 223
224 225 226 227
228 229 230 231
232 233 234 235
236 237 238 239
240 241 242 243
244 245 246 247
248 249 250 251
252 253 254 255