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

Nutrition Label

Routing footprint

AS5501 announces 51 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

• 129.233.0.0/17
• 129.233.163.0/24
• 129.233.128.0/17
• 129.233.252.0/24
• 129.233.253.0/24
• 129.233.254.0/24
• 129.233.255.0/24
• 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
• 153.96.18.0/24
• 153.96.19.0/24
• 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

Peering ecosystem

3 distinct peers via BGP. The first 3 are listed below.

Blast radius

Approximate count of dependent hostnames if AS5501 disappeared from the routing table.

~29,682 hostnames depend on this network.Sampled from 10 prefixes, snapshot Thu, 21 May 2026 01:00:39 GMT.

MOAS / hijack watch

Prefixes routed by AS5501 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.

No active MOAS conflicts. Every prefix announced by AS5501 is unique to AS5501 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS5501.

• Country · DE
• Peer · BELWUE BelWue-KoordinationAS553
• Prefix · 129.233.0.0/17
• Live MOAS conflicts feed
• Threat feed · Spamhaus DROP
• Whisper Internet Directory — home

Cypher and MCP

Reproduce the headline metric directly against graph.whisper.security:

MATCH (a:ASN {name: "AS5501"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.