CIDR Calculator

Calculate network ranges and host capacities using CIDR notation.

CIDR Setup
Adjust the prefix length to see network changes
/24
/0 (Internet)/32 (Host)
Equivalent Mask
CIDR Knowledge

CIDR (Classless Inter-Domain Routing) replaced the older Class A, B, and C network architecture.

A /24 network provides 256 addresses, while a /32 represents a single specific host.

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