IP Subnet Calculator — Network & Host Range
Quickly determine critical network parameters from an IP address and its associated CIDR prefix. Calculates network address, broadcast address, usable host range, and subnet mask.
Or upload a .txt file
Drag & drop your .txt file here, or click to select (one IP/CIDR per line)
Max file size: 10MB
Expected file format: Each line should contain one IP address with its CIDR prefix (e.g., `192.168.1.1/24`).