IPv6 subnet calculator

IPv6 CIDR to range calculator

Calculate the network address, final address, mask, and exact address capacity of any IPv6 CIDR prefix.

Example: 2606:4700::/32

Host bits are normalized to the network address before the range is calculated.

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Turn an IPv6 prefix into a complete range

Enter an IPv6 CIDR prefix such as 2001:db8::/48 to see its normalized network address, final address, subnet mask, and capacity.

Learn how IPv6 CIDR notation and subnet ranges work