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Subnet / CIDR Calculator

Calculate IPv4 and IPv6 subnet details, including network ranges, broadcast addresses, and usable hosts from a CIDR block.

IP Version

About

  • Convert IP and subnet mask or CIDR notation into comprehensive network details
  • Identify Network Address, Broadcast Address, and Usable Host Range
  • Support for both IPv4 and IPv6
  • 100% client-side execution for data privacy

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