Autonomous system
AS5501 FRAUNHOFER-CLUSTER-BW Research Institutes spread all over Germany
Education RIPE
Summary
Fraunhofer-Gesellschaft
education research legacy
Fraunhofer-Cluster-BW belongs to the Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Europe's largest applied-research organisation. The RIPE record describes it as "Research Institutes spread all over Germany" with the main network node in Karlsruhe.
What it's used for
- Campus and institute networking for Fraunhofer research sites, connecting laboratories, researchers and institute IT to the wider internet.
- The Baden-Wuerttemberg cluster aggregates several institutes behind one AS, with Karlsruhe acting as the hub.
Notable
- This is a research-institution network, not a commercial one. The address space is used by staff, labs and institute services rather than sold to customers.
- Fraunhofer connects through the German research networking ecosystem, so its transit relationships look like an academic network's rather than an ISP's.
Interesting
- Fraunhofer runs dozens of institutes across Germany, each fairly autonomous. Several hold their own AS numbers, so no single ASN represents "all of Fraunhofer" — this one covers the Baden-Wuerttemberg cluster.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 37 prefixes · 121K addresses IPv6 13 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 50 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS5501- Registry name
- Fraunhofer-Cluster-BW
- Registrant
- FhG-MNT
- Abuse contact
- noc-services@iosb.fraunhofer.de
- Registered
- 2002-01-18
- Last changed
- 2024-07-02
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 51 valid, 0 with no ROA
- ROAs
- 59 authorising AS5501
- ASPA
- no ASPA record
- IRR
- 98% registered · 50 of 51 announcements
- Route objects
- 161 naming AS5501
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere