Network Address Calculator
Enter any IP address with a subnet mask or CIDR prefix to instantly calculate the network address (Network ID) for your subnet. Determine which network segment a host belongs to, verify network boundaries, and get the broadcast address and host range — critical for routing table analysis and subnet troubleshooting. The ipv4 to ipv6 converter converts any IPv4 address to the IPv4-mapped IPv6 notation used in dual-stack socket libraries.
Input
Network Address Result
Binary Calculation (IP AND Mask = Network)
What is a Network Address?
The network address (also called Network ID) is the first address in a subnet and identifies the network itself. It's calculated by performing a bitwise AND operation between the IP address and subnet mask.
The network address cannot be assigned to any host device - it's reserved to identify the network. Similarly, the broadcast address (last address in the subnet) is also reserved.
Related Network Tools
Explore these related tools for subnet calculation and IP address management. Use the wildcard mask calculator to convert between subnet mask and wildcard mask formats when configuring OSPF network statements.
Additional networking calculators for IP address planning and network analysis. The subnet mask tool includes a full reference table showing all valid IPv4 subnet masks and their corresponding CIDR prefixes.