Subnet mask and how to resolve IP range [duplicate]

Posted by user2789433 on Server Fault See other posts from Server Fault or by user2789433
Published on 2013-11-13T02:14:59Z Indexed on 2013/11/13 3:56 UTC
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ip

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subnet

This question already has an answer here:

How does IPv4 Subnetting Work? 5 answers

If you click on this link WHO IS query You will see the results from a who is query for a random IP address. On the line

            "inetnum": "122.4.0.0/14",

What does it mean for the prefix to be 14?

I am using this as a reference Subnet Mask Cheatsheet

While resolving it, I get a very wide range which is something like 122.7.0.0-122.4.0.0

I am not able to understand how the IP range is calculate from the subnet mask and I am only able to find calculators online and not a method to solve it.

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