# IPv6 ULA Generator

Generate a random IPv6 unique local address prefix.

## URL

https://ilham.dev/tools/ipv6-ula-generator/

## What It Does

Generate a random IPv6 unique local address prefix in fd00::/8, following RFC 4193, for a network that should never be routed on the public internet.

## Features

- Runs in the browser
- No login required

## Input

text input.

## Output

text output.

## Privacy

Processing happens locally in the browser.

No input data is uploaded to ilham.dev.

- Requires login: false
- Requires API key: false
- Stores user data: false


## Examples

- What is the difference between fc00::/7 and fd00::/8?




## Questions

### What is the difference between fc00::/7 and fd00::/8?

The whole range is fc00::/7. The fd00::/8 half is where the 40-bit global ID is generated locally rather than assigned by a registry, which is the practical choice.