AS33873 — ARVATO-SYSTEMS-AS *(DE)

Nutrition Label

Routing footprint

AS33873 announces 30 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

• 84.17.160.0/20
• 84.17.160.0/19
• 84.17.176.0/20
• 91.105.240.0/22
• 91.105.240.0/21
• 91.105.244.0/22
• 109.235.136.0/22
• 109.235.136.0/21
• 109.235.140.0/22
• 145.228.0.0/17
• 145.228.0.0/16
• 145.228.128.0/17
• 146.185.96.0/20
• 146.185.96.0/19
• 146.185.112.0/20
• 156.67.12.0/24
• 156.67.12.0/23
• 156.67.13.0/24
• 185.29.116.0/24
• 185.29.116.0/23
• 185.29.117.0/24
• 185.79.168.0/23
• 185.79.168.0/22
• 185.79.170.0/23
• 194.31.6.0/24

Peering ecosystem

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

Blast radius

Approximate count of dependent hostnames if AS33873 disappeared from the routing table.

~8,811 hostnames depend on this network.Sampled from 10 prefixes, snapshot Thu, 21 May 2026 00:58:32 GMT.

MOAS / hijack watch

Prefixes routed by AS33873 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 AS33873 is unique to AS33873 in the current routing snapshot.

Threat posture

Related pages

Pivot deeper into the graph from AS33873.

• Country · DE
• Peer · BTAS5400
• Prefix · 84.17.160.0/20
• 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: "AS33873"})-[: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.