IPv4 Subnet & CIDR Bitwise Math
Subnet Calculator & CIDR Range Parser
Calculate network address, broadcast address, netmask, wildcard mask, and usable host count instantly.
FAQ
Frequently Asked Questions
Questions about network tools and interpreting results.
CIDR (Classless Inter-Domain Routing) is a compact representation of an IP address and its associated network mask, using a slash followed by the prefix length (e.g. 192.168.1.0/24).