Class A subnetting Question

Posted on 2007-07-23
Last Modified: 2012-08-14
We are currently using the address block of /23 on our local network. Unfortunately for us we are now out of address and we need to re-subnet our network. Is it possible to use a new block starting at /22? I used an online subnet calculator and it said that i had to start at and end at in order to use the range. It would be best for me if i could use a new range that would encompass the and numbers as we have nearly 150 networked printers and numerous switches and servers.

Also, we can't use any IP's higher that because we have an IP phone system that uses and up.

Question by:governor_arnold

    Expert Comment

    Yes, you can use  and it would give you usable addresses from to

    Or, if you want double that amount, use with address from to
    LVL 3

    Author Comment

    Wouldn't using give me usuable addresses through I thought that the /22 would give 1024 addresses.

    Accepted Solution

    You're right. I typed that too fast. will give you addresses

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