Question 1

Can I use these addresses in documentation?

Accepted Answer

Yes, they are fine for tests and examples. Turn off "globally routable only" to get private ranges such as 10.x and 192.168.x, which suit local experiments.

Question 2

How is randomness guaranteed?

Accepted Answer

Generation uses the browser's cryptographically secure random source (crypto.getRandomValues), which is suitable for test fixtures and mock data.

Question 3

Why public addresses by default?

Accepted Answer

Public addresses avoid reserved ranges such as loopback, link-local and documentation blocks — less to think about when you need realistic WAN IPs.