📡 Network
IPv6 ULA Generator
Generate IPv6 Unique Local Addresses
Generate IPv6 ULA (Unique Local Address) prefixes for private networks. Create RFC 4193 compliant fc00::/7 addresses. Free IPv6 ULA generator.
4 hex characters (0000-ffff). Use 0000 for first subnet.
Unique Local Addresses (ULA) are IPv6 addresses for private networks, similar to IPv4's private ranges.
Prefix: fd00::/8
Global ID: 40-bit random identifier to minimize collision probability.
Subnet ID: 16-bit field for up to 65,536 subnets per site.
RFC 4193: Defines the ULA format and generation algorithm.