| 2600:6c18:21:: | 2600:6c18:22:ffff:ffff:ffff:ffff:ffff | Charter Communications LLC |
| 2600:6c18:23:: | 2600:6c18:23:ffff:ffff:ffff:ffff:ffff | ALPENA ALCONA AREA CREDIT UNION |
| 2600:6c18:24:: | 2600:6c18:24:ffff:ffff:ffff:ffff:ffff | Charter Communications LLC |
| 2600:6c18:25:: | 2600:6c18:25:ffff:ffff:ffff:ffff:ffff | HEALTHSOURCE SAGINAW |
| 2600:6c18:26:: | 2600:6c18:26:ffff:ffff:ffff:ffff:ffff | Charter Communications LLC |
| 2600:6c18:27:: | 2600:6c18:27:ffff:ffff:ffff:ffff:ffff | C2G TECHNICAL SERVICES |
| 2600:6c18:28:: | 2600:6c18:28:ffff:ffff:ffff:ffff:ffff | YMCA OF GREATER GRAND RAPIDS NATIONAL |
| 2600:6c18:29:: | 2600:6c18:29:ffff:ffff:ffff:ffff:ffff | HUHTAMAKI INC HQ |
| 2600:6c18:2a:: | 2600:6c18:2a:ffff:ffff:ffff:ffff:ffff | BUILDERS FIRSTSOURCE INC NATIONAL MASTER |
| 2600:6c18:2b:: | 2600:6c18:2b:ffff:ffff:ffff:ffff:ffff | Charter Communications LLC |