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Subnet Calculator

Network, broadcast, mask, host range and size of any IPv4 or IPv6 subnet.

About Subnet Calculator

Enter an address with a prefix (192.168.1.10/24) or a mask to get the network and broadcast addresses, first and last host, number of hosts, subnet and wildcard masks in decimal and binary – and split the network into smaller subnets. IPv6 prefixes are supported too.

How to use

  1. Type an IP address, host name, domain or coordinates – or use the values filled in for you.
  2. Press Enter or the button – results appear instantly, and the page link keeps your query for sharing.
  3. Click any value to copy it; tables can be sorted and exported as CSV or JSON.

WhereNex does not store the addresses, names or positions you look up. IP locations come from our own copy of the DB-IP database (CC BY 4.0) and are approximate.

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