IPv4 Subnet Calculator

About IPv4 Subnet Calculator

IPv4 Subnet Calculator helps you calculate subnet information including network address, broadcast address, subnet mask, and usable host range.

Common Use Cases

  • Network administrators plan subnet allocations
  • IT professionals troubleshoot network connectivity
  • Students learn subnetting concepts
  • Developers design network architectures

Enter an IP address with CIDR notation (e.g., 192.168.1.0/24). Use the quick-select buttons for common classful networks.

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