AS5501 — FRAUNHOFER-CLUSTER-BW Research Institutes spread all over Germany

Network type: education

AS5501 announces 37 IPv4 prefixes covering 121,088 addresses and 13 IPv6 prefixes.

About this network

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.

Announced prefixes

• 129.233.0.0/17
• 129.233.163.0/24
• 129.233.197.0/24
• 129.233.198.0/23
• 129.233.203.0/24
• 129.233.204.0/22
• 129.233.214.0/23
• 129.233.218.0/23
• 129.233.220.0/22
• 129.233.240.0/20
• 137.251.0.0/16
• 153.96.0.0/21
• 153.96.8.0/23
• 153.96.10.0/24
• 153.96.12.0/22
• 153.96.18.0/23
• 153.96.24.0/24
• 153.96.54.0/23
• 153.96.112.0/23
• 153.96.126.0/23
• 153.96.144.0/23
• 153.96.220.0/22
• 153.96.248.0/23
• 153.96.250.0/24
• 153.96.253.0/24
• 153.96.254.0/24
• 153.97.0.0/21
• 153.97.11.0/24
• 153.97.26.0/24
• 192.42.63.0/24
• 192.42.64.0/24
• 192.44.0.0/22
• 192.44.10.0/24
• 192.44.13.0/24
• 192.44.17.0/24
• 192.44.24.0/24
• 192.102.171.0/24
• 2a03:db80:1c14::/48
• 2a03:db80:4404::/48
• 2a03:db80:4410::/48
• 2a03:db80:4414::/48
• 2a03:db80:4416::/48
• 2a03:db80:4420::/48
• 2a03:db80:4424::/48
• 2a03:db80:4434::/48
• 2a03:db80:4460::/48
• 2a03:db80:4470::/48
• 2a03:db80:4480::/48
• 2a03:db80:4484::/48
• 2a03:db80:4494::/48

Upstream networks

• AS553 Universitaet Stuttgart
• AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
• AS13045 htp GmbH

Adjacent networks

• AS553 Universitaet Stuttgart
• AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
• AS13045 htp GmbH