IPv6 Subnet Calculator

Calculates an IPv6 subnet's network address and total address count from CIDR notation. Enter an address and prefix, like "2001:db8::/32".

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Calculates an IPv6 subnet's network address and total address count from CIDR notation. Enter an address and prefix, like "2001:db8::/32".

Use cases

  • Finding the compressed network address for an IPv6 prefix
  • Checking how many addresses a given IPv6 prefix contains

Examples

A /32 network

2001:db8::/32
{"network": "2001:db8::", "compressed": "2001:db8::/32", "prefix_length": 32, "total_addresses": "79228162514264337593543950336"}

FAQ

Is my data sent to a server?

Yes — the calculation runs on the server for this tool.

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