CIDR (Classless Inter-Domain Routing) calculators are simple tools to assist you to calculate a block of IP addresses.
CIDR notation is a compact representation of an IP address and its associated routing prefix. The notation is constructed from an IP address, a slash ('/') character, and a decimal number. The number is the count of leading 1 bits in the subnet mask. Larger values here indicate smaller networks. The maximum size of the network is given by the number of addresses that are possible with the remaining, least-significant bits below the prefix.
The IP address is expressed according to the standards of IPv4 or IPv6. The address may denote a single, distinct interface address or the beginning address of an entire network. The aggregation of these bits is often called the host identifier.
This is a code challenge project where I tried to create a CIDR calculator without any JavaScript or other libraries.
I am going to add in some libraries to help with development for the new version and also remove some libraries I used in the past to make it even closer to "no library" as possible.
