| 2001:1890:1d0b:2400:: | 2001:1890:1d0b:24ff:ffff:ffff:ffff:ffff | INTERNATIONAL BUSINESS MACHINES |
| 2001:1890:1d0b:2500:: | 2001:1890:1d0b:26ff:ffff:ffff:ffff:ffff | ATT CONNECTED COMMUNITIES |
| 2001:1890:1d0b:2700:: | 2001:1890:1d0b:27ff:ffff:ffff:ffff:ffff | ANCIRA ENTERPRISES |
| 2001:1890:1d0b:2800:: | 2001:1890:1d0b:28ff:ffff:ffff:ffff:ffff | LABORATORY CORPORATION OF AME |
| 2001:1890:1d0b:2900:: | 2001:1890:1d0b:2aff:ffff:ffff:ffff:ffff | SPFM LP |
| 2001:1890:1d0b:2b00:: | 2001:1890:1d0b:2bff:ffff:ffff:ffff:ffff | APXNET |
| 2001:1890:1d0b:2c00:: | 2001:1890:1d0b:2cff:ffff:ffff:ffff:ffff | UNITED HEALTHCARE SERVICES |
| 2001:1890:1d0b:2d00:: | 2001:1890:1d0b:2eff:ffff:ffff:ffff:ffff | CONSOLIDATED SMART SYSTEMS |
| 2001:1890:1d0b:2f00:: | 2001:1890:1d0b:2fff:ffff:ffff:ffff:ffff | CNF TECHNOLOGIES CORPORATION |
| 2001:1890:1d0b:3000:: | 2001:1890:1d0b:30ff:ffff:ffff:ffff:ffff | ENTRAVISION COMMUNICATIONS |