IPv6 ULA Generator
Enter 4 hexadecimal groups (e.g., fd12:3456)
Leave empty for random subnet ID
Generated IPv6 ULA Addresses
Network Information
Network Prefix: -
Global ID: -
Subnet ID: -
ULA Details
Prefix: fd00::/8
Type: Unique Local
Scope: Local only
About IPv6 ULAs
IPv6 Unique Local Addresses (ULA) are used for local communications and are not intended to be routed on the public Internet.
- Prefix: fd00::/8 (Block FC00::/7 divided by the L bit)
- Global ID: 40-bit randomly generated identifier
- Subnet ID: 16-bit subnet identifier
- Interface ID: 64-bit host identifier
- Similar to RFC 1918 private addresses in IPv4