| 2001:1890:1c0a:3d00:: | 2001:1890:1c0a:3dff:ffff:ffff:ffff:ffff | DHS OPO ITAC |
| 2001:1890:1c0a:3e00:: | 2001:1890:1c0a:3eff:ffff:ffff:ffff:ffff | NATIONAL RAILROAD PASSENGER C |
| 2001:1890:1c0a:3f00:: | 2001:1890:1c0a:40ff:ffff:ffff:ffff:ffff | AT&T Enterprises, LLC |
| 2001:1890:1c0a:4100:: | 2001:1890:1c0a:41ff:ffff:ffff:ffff:ffff | AKAMAI TECHNOLOGIES, INC |
| 2001:1890:1c0a:4200:: | 2001:1890:1c0a:42ff:ffff:ffff:ffff:ffff | METROPOLITAN LIFE INSURANCE C |
| 2001:1890:1c0a:4300:: | 2001:1890:1c0a:43ff:ffff:ffff:ffff:ffff | LHOIST NORTH AMERICA OF ALABA |
| 2001:1890:1c0a:4400:: | 2001:1890:1c0a:45ff:ffff:ffff:ffff:ffff | AT&T Enterprises, LLC |
| 2001:1890:1c0a:4600:: | 2001:1890:1c0a:46ff:ffff:ffff:ffff:ffff | TCORP-FA-NEXTGEN-CALL HANDLING |
| 2001:1890:1c0a:4700:: | 2001:1890:1c0a:47ff:ffff:ffff:ffff:ffff | ALLSTATE INSURANCE COMPANY |
| 2001:1890:1c0a:4800:: | 2001:1890:1c0a:48ff:ffff:ffff:ffff:ffff | PHOENIX INFRASTRUCTURE, LLC |