Calculate subnet information, network ranges, and host addresses. Essential tool for network administrators and IT professionals.
Enter IP address (e.g., 192.168.1.1)
Enter subnet mask (e.g., 255.255.255.0)
Enter CIDR prefix (e.g., /24)
Our comprehensive IP subnet calculator helps network administrators and IT professionals understand and manage IP addressing schemes. This essential networking tool provides accurate subnet calculations, network ranges, and host addressing information for efficient network design and management.
1.0.0.0 - 126.255.255.255
128.0.0.0 - 191.255.255.255
192.0.0.0 - 223.255.255.255
Enter an IP address and either a subnet mask or CIDR notation. The calculator automatically computes the network address, broadcast address, first and last usable host addresses, and provides detailed subnet information including total and usable host counts.
When planning your network, always consider future growth and scalability. Use subnetting to create logical network segments that match your organizational structure. Remember that the network address and broadcast address are reserved and cannot be assigned to hosts. Document your subnet plan thoroughly for troubleshooting and network management.
Our comprehensive IP subnet calculator helps network administrators and IT professionals understand and manage IP addressing schemes. This essential networking tool provides accurate subnet calculations, network ranges, and host addressing information for efficient network design and management.
Subnet identifier
All hosts destination
Usable addresses
Network boundary
Enter an IP address and either a subnet mask or CIDR notation. The calculator automatically computes the network address, broadcast address, first and last usable host addresses, and provides detailed subnet information including total and usable host counts.
Class A Networks:
Class B Networks:
When planning your network, always consider future growth and scalability. Use subnetting to create logical network segments that match your organizational structure. Remember that the network address and broadcast address are reserved and cannot be assigned to hosts. Document your subnet plan thoroughly, including network addresses, subnet masks, and host ranges. This documentation will be invaluable for troubleshooting and network management. Consider using private IP address ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) for internal networks to avoid conflicts with public addressing.