| 2001:1890:1ffe:5700:: | 2001:1890:1ffe:57ff:ffff:ffff:ffff:ffff | CALMAC SUITES, LTD |
| 2001:1890:1ffe:5800:: | 2001:1890:1ffe:58ff:ffff:ffff:ffff:ffff | HCA INFORMATION TECHNOLOGY |
| 2001:1890:1ffe:5900:: | 2001:1890:1ffe:59ff:ffff:ffff:ffff:ffff | FROST NATIONAL BANKTELCOM DEP |
| 2001:1890:1ffe:5a00:: | 2001:1890:1ffe:5aff:ffff:ffff:ffff:ffff | GLOBAL TEL LINK CORPORATION |
| 2001:1890:1ffe:5b00:: | 2001:1890:1ffe:5bff:ffff:ffff:ffff:ffff | HCA INFORMATION TECHNOLOGY |
| 2001:1890:1ffe:5c00:: | 2001:1890:1ffe:5cff:ffff:ffff:ffff:ffff | TEXAS WORKFORCE COMMISSION |
| 2001:1890:1ffe:5d00:: | 2001:1890:1ffe:5eff:ffff:ffff:ffff:ffff | GENERAL DYNAMICS INFOMATION T |
| 2001:1890:1ffe:5f00:: | 2001:1890:1ffe:5fff:ffff:ffff:ffff:ffff | INTERFACE SECURITY SYSTEMS L. |
| 2001:1890:1ffe:6000:: | 2001:1890:1ffe:60ff:ffff:ffff:ffff:ffff | RMR TRIFECTA LLC |
| 2001:1890:1ffe:6100:: | 2001:1890:1ffe:61ff:ffff:ffff:ffff:ffff | LCPTRACKER |