Cybersecurity Tools & Resources
CIDR (Classless Inter-Domain Routing) Mapping is a method used to capture a CIDR range and provide information about the IP addresses available within that range. With CIDR, a single IP address can be used to create multiple unique IP addresses. The CIDR IP address looks like a normal IP address with the addition of an IP network prefix that can be identified by a forward slash and number (i.e. "/24") at the end of the IP address (i.e. 192.168.1.1/26 or 172.16.100.1/22). This tool is intended to help you perform network tasks, like figuring out the subnet mask, calculating total host count, or identifying what the first and last IP is within a specific CIDR range.
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