/20 Subnet Mask: 255.255.240.0

Answer
255.255.240.0 · 4,094 usable hosts

A /20 network uses 20 bits for the network and 12 for hosts, giving 4,096 addresses and 4,094 usable hosts. It is typically used for cloud VPC subnets and large VLANs.

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    For estimating and educational purposes only. Results are approximate and are not a substitute for a licensed professional, the manufacturer's instructions or your local code. Disclaimer

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    /20 at a glance

    PropertyValue
    Subnet mask255.255.240.0
    Wildcard mask0.0.15.255
    Total addresses4,096
    Usable hosts4,094
    Size relative to /2416 × /24

    Example: 192.168.0.0/20

    FieldAddress
    Network192.168.0.0
    First host192.168.0.1
    Last host192.168.15.254
    Broadcast192.168.15.255

    Frequently asked questions

    How many hosts are in a /20?

    4,094 usable hosts out of 4,096 addresses.

    What is the wildcard mask for /20?

    0.0.15.255, the inverse of 255.255.240.0.

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