| 2001:240:1f1:2b:: | 2001:240:1f1:2c:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:2d:: | 2001:240:1f1:2d:ffff:ffff:ffff:ffff | J.S.B. Co., Ltd. |
| 2001:240:1f1:2e:: | 2001:240:1f1:2e:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:2f:: | 2001:240:1f1:2f:ffff:ffff:ffff:ffff | Acecook Co., Ltd. |
| 2001:240:1f1:30:: | 2001:240:1f1:31:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:32:: | 2001:240:1f1:32:ffff:ffff:ffff:ffff | TERRA, Inc. |
| 2001:240:1f1:33:: | 2001:240:1f1:33:ffff:ffff:ffff:ffff | Aoyama Trading Co., Ltd. |
| 2001:240:1f1:34:: | 2001:240:1f1:37:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |
| 2001:240:1f1:38:: | 2001:240:1f1:38:ffff:ffff:ffff:ffff | Daito Chemix Corporation |
| 2001:240:1f1:39:: | 2001:240:1f1:39:ffff:ffff:ffff:ffff | Internet Initiative Japan Inc. |