Autonomous system
AS9007 DUF-AS Winsbergring 38
Unclassified RIPE
Summary
Dumrath & Fassnacht KG (GmbH & Co.)
enterprise legacy
DUF-AS is Dumrath & Fassnacht KG (GmbH & Co.), a Hamburg publishing house (Winsbergring 38, Bahrenfeld) best known for North German telephone and business directories, Das Telefonbuch, Gelbe Seiten and Das Örtliche.
What it's used for
A single-organisation enterprise network. It announces 192.166.160.0/19 (and a covering /20), ~8k addresses, with just one observed neighbour, the footprint of a company routing its own legacy block behind a single upstream rather than a service provider.
Notable
No PTRs were returned on the addresses sampled. The publisher runs internet operations under the duf.de domain; the /19 and 2000 first-seen date reflect an early, generously sized allocation held by a media company.
Interesting
The AS/KG (GmbH & Co.) in the name is a German company form, not an autonomous-system reference, and the firm is a directory publisher, so despite the size of the block this is an ordinary enterprise rather than a hosting or access network.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 6 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS9007- Registry name
- DUF-AS
- Registrant
- DUF-MNT
- Abuse contact
- abuse@duf.de
- Registered
- 2002-08-27
- Last changed
- 2022-11-21
- Status
- active
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere