IPv6 ULA (Unique Local Address) Generator
Network & WebmasterGenerate RFC 4193 compliant unique local IPv6 address prefixes (ULA, fd00::/8) for private networks.
/48 Network Prefix (Site Level)
fda1:b2c3:d4e5::/48
/64 Subnet Prefix (VLAN Level)
fda1:b2c3:d4e5:0001::/64
Gateway / Router IP Example
fda1:b2c3:d4e5:0001::1
Subnet Usable Host Range
fda1:b2c3:d4e5:0001::1 - fda1:b2c3:d4e5:0001:ffff:ffff:ffff:ffff
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How to Use IPv6 ULA (Unique Local Address) Generator
1
Click Generate
Generate a random 40-bit Global ID prefix.
2
Review Subnets
Inspect standard /48 and /64 ULA prefixes.
3
Copy & Use
Copy prefixes for router and firewall configurations.
Privacy Guarantee:All computations, transformations, and file processing occur 100% locally in your browser via client-side JavaScript. Your sensitive data is never uploaded or logged on any remote server.
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