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| Last Byte | What | Why |
| Addresses | Happens | |
| to Them | ||
| 0 | invalid | first subnet address |
| 1-30 | valid | hosts on first subnet |
| 31 | invalid | broadcast address of first subnet |
| 32 | invalid | second subnet address |
| 33-62 | valid | hosts for second subnet |
| 63 | invalid | broadcast address of second subnet |
| 64 | invalid | third subnet address |
| 65-94 | valid | hosts for third subnet |
| 95 | invalid | broadcast address of third subnet |
| 96 | invalid | fourth subnet address |
| 97-126 | valid | hosts for fourth subnet |
| 127 | invalid | broadcast address of fourth subnet |
| 128 | invalid | fifth subnet address |
| 129-158 | valid | hosts for fifth subnet |
| 159 | invalid | broadcast address of fifth subnet |
| 160 | invalid | sixth subnet address |
| 161-190 | valid | hosts for sixth subnet |
| 191 | invalid | broadcast address of sixth subnet |
| 192 | invalid | seventh subnet address |
| 193-222 | valid | hosts for seventh subnet |
| 223 | invalid | broadcast address of seventh subnet |
| 224 | invalid | eighth subnet address |
| 225-254 | valid | hosts for eighth subnet |
| 255 | invalid | broadcast for eighth subnet |