/23 Subnet Mask: 255.255.254.0

Answer
255.255.254.0 · 510 usable hosts

A /23 network uses 23 bits for the network and 9 for hosts, giving 512 addresses and 510 usable hosts. It is typically used for networks slightly larger than a /24.

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    /23 at a glance

    PropertyValue
    Subnet mask255.255.254.0
    Wildcard mask0.0.1.255
    Total addresses512
    Usable hosts510
    Size relative to /242 × /24

    Example: 192.168.0.0/23

    FieldAddress
    Network192.168.0.0
    First host192.168.0.1
    Last host192.168.1.254
    Broadcast192.168.1.255

    Frequently asked questions

    How many hosts are in a /23?

    510 usable hosts out of 512 addresses.

    What is the wildcard mask for /23?

    0.0.1.255, the inverse of 255.255.254.0.

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