IPv6 ULA generator

Generators

Generate a RFC 4193 Unique Local Address (fd00::/8) with random Global ID.

Global ID (40-bit hex)

Subnet ID (1–4 hex)

Unique Local Address (RFC 4193)

Per RFC 4193: the leading byte `fd` marks a locally-assigned ULA; the 40-bit Global ID should be random per organization, not chosen by humans.