IPv6 ULA generator
Generate a random IPv6 unique local address prefix in the fd00::/8 range with a /64 suffix. Runs locally in your browser.
IPv6 ULA prefix
fd48:dd0d:67ba:25ba::/64
// About this tool
Create a ULA prefix for a private IPv6 network in a lab or home setup. Each generation produces a new random /64 prefix. The prefix is ready for private network use.
// How to use it
- Open the tool to generate a prefix automatically.
- Generate again for a different prefix.
- Copy the /64 prefix into your network configuration.
// Frequently asked questions
What is a ULA prefix?
A unique local address block for private IPv6 networks, similar in purpose to private IPv4 ranges.
Is the prefix guaranteed unique?
It is randomly generated and collision risk is very low, but it is not registered globally.