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As useful tools are found, they will be placed on this page.
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TCP/IP Subnetting Information |
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The following tables illustrate the IP subnetting details:
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Class A Subnetting |
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Max Bits |
Subnet |
Max # Hosts |
Subnet Mask |
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0 |
0 |
16777214 |
255.0.0.0 | |
1 |
2 |
8388606 |
255.128.0.0 | |
2 |
4 |
4194302 |
255.192.0.0 |
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3 |
8 |
2097150 |
255.224.0.0 | |
4 |
16 |
1048574 |
255.240.0.0 | |
5 |
32 |
524286 |
255.248.0.0 | |
6 |
64 |
262142 |
255.252.0.0 |
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7 |
128 |
131070 |
255.254.0.0 | |
8 |
256 |
65534 |
255.255.0.0 |
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Class B Subnetting |
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Max Bits |
Subnet |
Max # Hosts |
Subnet Mask |
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0 |
0 |
65534 |
255.255.0.0 | |
1 |
1 |
32766 |
255.255.128.0 | |
2 |
4 |
16382 |
255.255.192.0 |
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3 |
8 |
8190 |
255.255.224.0 | |
4 |
16 |
4094 |
255.255.240.0 | |
5 |
32 |
2046 |
255.255.248.0 | |
6 |
64 |
1022 |
255.255.252.0 |
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7 |
128 |
510 |
255.255.254.0 | |
8 |
256 |
254 |
255.255.255.0 |
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Class C Subnetting |
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Max Bits |
Subnet |
Max # Hosts |
Subnet Mask |
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0 |
0 |
254 |
255.255.255.0 | |
1 |
2 |
126 |
255.255.255.223 | |
2 |
4 |
62 |
255.255.255.192 |
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3 |
8 |
30 |
255.255.255.224 | |
4 |
16 |
14 |
255.255.255.240 | |
5 |
32 |
6 |
255.255.255.248 | |
6 |
64 |
2 |
255.255.255.252 |
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7 |
invalid |
invalid |
invalid | |
8 |
invalid |
invalid |
invalid |
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Copyright 1998-2007 ONCTek LLC and its licensors. All rights reserved.
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