| 2001:1890:1c00:7200:: | 2001:1890:1c00:72ff:ffff:ffff:ffff:ffff | AAA MID-ATLANTICATTN IT ADMIN |
| 2001:1890:1c00:7300:: | 2001:1890:1c00:73ff:ffff:ffff:ffff:ffff | AT&T Enterprises, LLC |
| 2001:1890:1c00:7400:: | 2001:1890:1c00:74ff:ffff:ffff:ffff:ffff | GAINWELL TECHNOLOGIES LLCPO4 |
| 2001:1890:1c00:7500:: | 2001:1890:1c00:75ff:ffff:ffff:ffff:ffff | PROQUIRE LLC |
| 2001:1890:1c00:7600:: | 2001:1890:1c00:78ff:ffff:ffff:ffff:ffff | AT&T Enterprises, LLC |
| 2001:1890:1c00:7900:: | 2001:1890:1c00:79ff:ffff:ffff:ffff:ffff | DELLOITTE SERVICES LPCO CAL |
| 2001:1890:1c00:7a00:: | 2001:1890:1c00:7aff:ffff:ffff:ffff:ffff | AT&T Enterprises, LLC |
| 2001:1890:1c00:7b00:: | 2001:1890:1c00:7bff:ffff:ffff:ffff:ffff | ATTSI, INFORMATION TECHNOLOGY OP |
| 2001:1890:1c00:7c00:: | 2001:1890:1c00:7cff:ffff:ffff:ffff:ffff | DELLOITTE SERVICES LPCO CAL |
| 2001:1890:1c00:7d00:: | 2001:1890:1c00:7dff:ffff:ffff:ffff:ffff | AT&T CORP-INTRA-LEGACY T LEGAL |