System accidents

Opinions, among other things, that someone decided were worth putting online.

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Visual Subnet Calculator

A tool to help you divide and join IPv4 subnets dynamically.

Network Address

Mask (/)

Subnet Netmask Range Useable Hosts Divide Join

Subnet	Netmask	Range	Useable	Hosts	Divide	Join

Credit to the original author: davidc.net