IP Subnet Calculator

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IPv6 Network

Simple example with a unique-local IPv6 Subnet

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Class B Example

Example subnetting for a class B private network

Image 3

Subnetting a subnet

Subnetting a smaller /69 IPv6 Network

Image 4

8-bit deep

Subnets showing all values for 8 bits - 256 rows

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RIRs

Illustrative distribution to RIRs from global unicast 2000::/3 pool

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Fringe case

Fringe case showcasing IPv4 mapped IPv6 (::ffff:a.b.c.d/96)

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Blank notes and orphan notes - Summary

IP Address Notes