IP Range Calculator

Enter an IP address and CIDR notation (like 192.168.1.0/24). The calculator determines the network address, broadcast address, usable host range, subnet mask, wildcard mask, and total number of hosts in the network.

CIDR (Classless Inter-Domain Routing) notation combines an IP address with a prefix length (like /24). The number after the slash indicates how many bits are used for the network portion. /24 means 24 bits for network, 8 bits for hosts (256 addresses).

The calculator shows network address (first IP), broadcast address (last IP), usable host range (excluding network and broadcast), subnet mask, wildcard mask, total hosts, usable hosts, and binary representations. It also accounts for cloud provider reserved IPs.

Cloud providers (AWS, Azure, GCP) reserve some IPs in each subnet for their services (like .0 for network, .1 for gateway, .2-.3 for DNS). The calculator shows both theoretical and actual usable IPs after accounting for these reservations.

Yes, change the CIDR prefix to calculate different subnet sizes. Smaller prefixes (like /16) create larger networks with more hosts, while larger prefixes (like /28) create smaller networks. The calculator works with any valid CIDR prefix from /0 to /32.