IPv6 ULA Generator
Generate IPv6 Unique Local Addresses (ULA), supporting custom prefixes and various interface ID generation methods.
ULA Configuration
Configure IPv6 ULA address generation parameters
Local unique address prefix starting with fd00::/8
About ULA
ULA (Unique Local Address):
- • RFC 4193 defined unique local address
- • Prefix: fc00::/7
- • Not routed on the public internet
- • Used for internal network communication
Prefix Allocation:
- • fc00::/8: Future definition
- • fd00::/8: Randomly generated Global ID
Presets
Click to use common network configs
Home Network
/48
fd00:1234:5678::
Typical Home IPv6 Network
Small Office
/48
fd00:abcd:ef01::
Small Office Network Config
Enterprise
/48
fd00:1111:2222:3333::
Enterprise Level Network
Data Center
/48
fd00:dead:beef:cafe::
Data Center Network
Subnet Info
Subnet Bits:/48
Available Subnets:4,294,967,296
Hosts per Subnet:65,536
CIDR:fd00:1234:5678::/48
Usage Guide
Interface ID Types:
• Random: Completely random generation
• EUI-64: Based on MAC address
• Stable Privacy: Private but stable
Best Practices:
• Assign unique /48 for each site
• Assign /64 for each LAN
• Use random Subnet ID for security