| 2001:638:51e:: | 2001:638:51e:ffff:ffff:ffff:ffff:ffff | bib International College Mettmann |
| 2001:638:51f:: | 2001:638:51f:ffff:ffff:ffff:ffff:ffff | Bundesanstalt fuer Arbeitsschutz und Arbeitsmedi.. |
| 2001:638:520:: | 2001:638:520:ffff:ffff:ffff:ffff:ffff | Hochschule Hamm-Lippstadt |
| 2001:638:521:: | 2001:638:521:ffff:ffff:ffff:ffff:ffff | Center for Advanced Internet Studies |
| 2001:638:522:: | 2001:638:522:ffff:ffff:ffff:ffff:ffff | Studierendenwerk Dortmund AoeR |
| 2001:638:523:: | 2001:638:523:ffff:ffff:ffff:ffff:ffff | FernUniversitaet in Hagen |
| 2001:638:524:: | 2001:638:600:ffff:ffff:ffff:ffff:ffff | Verein zur Foerderung eines Deutschen Forschungs.. |
| 2001:638:601:: | 2001:638:601:ffff:ffff:ffff:ffff:ffff | Hochschule Harz 38855 Wernigerode |
| 2001:638:602:: | 2001:638:602:ffff:ffff:ffff:ffff:ffff | TU Braunschweig |
| 2001:638:603:: | 2001:638:603:ffff:ffff:ffff:ffff:ffff | Verein zur Foerderung eines Deutschen Forschungs.. |