Calculate network address, broadcast, host range, and subnet mask from CIDR notation
CIDR (Classless Inter-Domain Routing) notation expresses an IP address and its associated network prefix as address/prefix. The prefix length defines how many bits are the network part.
/8 → 16,777,214 hosts
/16 → 65,534 hosts
/24 → 254 hosts
/25 → 126 hosts
/30 → 2 hosts (point-to-point)
10.0.0.0/8
172.16.0.0/12
192.168.0.0/16
During recon, subnet calculations help scope network segments, identify broadcast domains, and enumerate potential hosts within a given CIDR range.
