| 2001:240:1f1:4f:: | 2001:240:1f1:4f:ffff:ffff:ffff:ffff | DENSO CORPORATION |
| 2001:240:1f1:50:: | 2001:240:1f1:50:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:51:: | 2001:240:1f1:51:ffff:ffff:ffff:ffff | ATIS CORPORATION |
| 2001:240:1f1:52:: | 2001:240:1f1:52:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:53:: | 2001:240:1f1:53:ffff:ffff:ffff:ffff | Olympus Corporation |
| 2001:240:1f1:54:: | 2001:240:1f1:59:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:5a:: | 2001:240:1f1:5a:ffff:ffff:ffff:ffff | FALCO biosystems Ltd. |
| 2001:240:1f1:5b:: | 2001:240:1f1:5b:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:5c:: | 2001:240:1f1:5c:ffff:ffff:ffff:ffff | Toyota Working EDI Promotional Association |
| 2001:240:1f1:5d:: | 2001:240:1f1:60:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |