# Networks

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### 10.0.0.10/27... what is the ip range?

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This is probably a very easy question to answer to most network experts...

i have a network diagram indicating my rnage of ips is 10.0.0.10/27. What is my actual range? How do i determine the range based on the 27?

Any help will be greatly appreciated.

Andres

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### 10.0.0.10/27... what is the ip range?

by In reply to 10.0.0.10/27... what is t ...

10.0.0.1-31 is the range.
The 27 is converted to a 255.255.255.224 subnet mask.
To do that, count the high order bits.
255 255 255 224
11111111 11111111 11111111 11100000
256 ? 224 = 32
32 - 2 = 30 the 2 represents 1 for the network address and 1 for the broadcast address.

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### 10.0.0.10/27... what is the ip range?

by In reply to 10.0.0.10/27... what is t ...

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### 10.0.0.10/27... what is the ip range?

by In reply to 10.0.0.10/27... what is t ...

All the subnet mask of 27 tells you is that there are 32 possibleaddresses per subnet (a whole mask would be 32 bits so if 27 bits are the network part, the host part would be 32-27 or 5 bits and two to the fifth is 32) and you always subtract two because the network address and broadcast address are not generally useable.

Similarly, a /26 subnet mask would provide 62 useable addresses (32-26=6 and two to the sixth is 64 minus the two unuseable addresses) and a /28 subnet mask would provide 14.

paul

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### 10.0.0.10/27... what is the ip range?

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