| Range From | Range To | Organisation |
|---|---|---|
| 2001:1890:1d50:: | 2001:1890:1d51:ffff:ffff:ffff:ffff:ffff | |
| 2001:1890:1d52:: | 2001:1890:1d52:ff:ffff:ffff:ffff:ffff | |
| 2001:1890:1d52:100:: | 2001:1890:1d52:ffff:ffff:ffff:ffff:ffff | |
| 2001:1890:1d53:: | 2001:1890:1dfe:ffff:ffff:ffff:ffff:ffff |