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# IP:  How many IP addresses do i get on 10.48.3.66 on 255.255.255.224

Posted on 2009-04-18
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Hi All,

How many IP addresses can I use on 10.48.3.66 with a subnet of 255.255.255.224

Thanks
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Question by:detox1978

Expert Comment

Thats a question to your internet provider. What i-net provider you use?
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LVL 43

Accepted Solution

You can use .65 - . 94 (30 useable).
0

LVL 68

Expert Comment

IP Entered = ..................: 10.48.3.66
CIDR = ........................: /27
Wildcard Bits = ...............: 0.0.0.31
------------------------------------------------
Usable IP Addresses = .........: 30
First Usable IP Address = .....: 10.48.3.65
Last Usable IP Address = ......: 10.48.3.94

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LVL 6

Expert Comment

Using an ip subnet calculator (iin http://www.subnet-calculator.com/)

You have a class A network with a range from 10.48.3.65 to 10.48.3.94.
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LVL 4

Expert Comment

The class of the network is designated by the subnet mask.

in binary this is 11111111.1111111.1111111.11100000

This means the first 27 bits of your IP address designate the network you are on and the last 5 bits designate the machine number on the network.

Therefore you have 5 bits which allows you 2^5 possible addresses on the network allowing you 32 possible ip addresses.

here is a link to an explanation on subnets
http://www.troutman.org/tech/linux_guides/subnet.html

Hope that helps.
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LVL 1

Expert Comment

As "woolmilkporc" said, though, you only have 30 usable IP addresses. But "The King" is right in that you do not have a Class A network.
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