Free IPv6 Network Planning & Calculator Tools
Calculate IPv6 subnet allocations, plan nibble-boundary reverse DNS delegations (ip6.arpa), and generate PTR records.
Available Diagnostics & Tools
IPv6 Subnet Planner & Address Splitter | iN2 Tools →
Plan and allocate IPv6 subnets client-side using high-precision address space splits.
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IPv6 Nibble Boundary & Reverse DNS Planner | iN2 Tools →
Visualize IPv6 address splits on 4-bit nibbles and generate reverse DNS zone PTR delegation names.
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IPv4 & IPv6 Subnet Calculator | iN2 Tools →
Calculate subnet ranges, masks, broadcasts, CIDR subnets, and host ranges for IPv4 and IPv6 addresses.
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