| 2003:81:51:: | 2003:81:51:ffff:ffff:ffff:ffff:ffff | Maerz |
| 2003:81:52:: | 2003:81:53:ffff:ffff:ffff:ffff:ffff | Deutsche Telekom AG |
| 2003:81:54:: | 2003:81:54:ffff:ffff:ffff:ffff:ffff | Raab Vitalfood GmbH |
| 2003:81:55:: | 2003:81:56:ffff:ffff:ffff:ffff:ffff | Deutsche Telekom AG |
| 2003:81:57:: | 2003:81:57:ffff:ffff:ffff:ffff:ffff | Hoergeraete Langer GmbH & Co. KG |
| 2003:81:58:: | 2003:81:58:ffff:ffff:ffff:ffff:ffff | DBS Delta Business Service GmbH |
| 2003:81:59:: | 2003:81:59:ffff:ffff:ffff:ffff:ffff | TUNAP Deutschland Vertriebs GmbH |
| 2003:81:5a:: | 2003:81:5c:ffff:ffff:ffff:ffff:ffff | Deutsche Telekom AG |
| 2003:81:5d:: | 2003:81:5d:ffff:ffff:ffff:ffff:ffff | Safety-Kleen Deutschland GmbH |
| 2003:81:5e:: | 2003:81:5e:ffff:ffff:ffff:ffff:ffff | optegra GmbH & Co. KG Steuerberatungsgesellschaf.. |