REVIEW OF ADDRESSING
Table 1-7. Examples of Class B Subnet Masks
Decimal | Binary | Available Subnet | Host IDs | |
Mask | Equivalent | Addresses | Per Subnet | |
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192. 0 | 11000000 00000000 | 64 and 192 | 16,382 | |
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224. 0 | 11100000 00000000 | 32, 64, 96, 128, 192, | 8,190 | |
224 | ||||
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240. 0 | 11110000 00000000 | 16 - 240 | 4,094 | |
increments of 16 | ||||
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248. 0 | 11111000 00000000 | 8 - 248 | 2,046 | |
increments of 8 | ||||
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252. 0 | 11111100 00000000 | 4 - 252 | 1,022 | |
increments of 4 | ||||
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254. 0 | 11111110 00000000 | 2 - 254 | 510 | |
increments of 2 | ||||
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255. 0 | 11111111 00000000 | 1 - 254 | 254 | |
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255. 128 | 11111111 10000000 | 0 - 255.128 | 126 | |
1 - 255. 0 | ||||
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| 0 - 254. 192 |
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255. 192 | 11111111 11000000 | 0 - 255. 128 | 62 | |
0 - 255. 64 | ||||
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| 1 - 255. 0 |
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| 0 - 255. 32, 64, 96, |
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255. 224 | 11111111 11100000 | 128, 160, 192, 224 | 30 | |
0 - 254. 224 | ||||
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| 1 - 254. 0 |
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| 0 - 254. 240 |
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255. 240 | 11111111 11110000 | 0 - 255. 16 - 240 | 14 | |
increments of 16 | ||||
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| 1 - 255. 0 |
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| 0 - 255. 8 - 240 |
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255. 248 | 11111111 11111000 | increments of 8 | 6 | |
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| 0 - 254. 248 |
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| 0 - 255. 4 - 248 |
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255. 252 | 11111111 11111100 | increments of 4 | 2 | |
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| 0 - 254. 252 |
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