Autonomous system
AS9183 CIAFS3
Unclassified RIPE
Summary
Robert Bosch GmbH
enterprise legacy
AS9183 (CIAFS3) is held by Robert Bosch GmbH, the Stuttgart-based engineering and technology group. The handle is an internal Bosch department code, not a company name — nothing about CIAFS3 tells you who this is, but the registry, the address space and the reverse DNS all agree. The AS is Bosch's corporate internet-access network.
What it's used for
This is a large enterprise network, and its shape is unmistakable. RIS sees 264 IPv4 prefixes covering 67,584 addresses, plus one IPv6 /32 (2a03:cc00::/32) — and only 2 observed BGP neighbours. That combination is the tell. A carrier holding 67k addresses would peer with hundreds of networks; two neighbours means Bosch buys transit from a small number of upstreams and announces its own space to them. It is a consumer of internet connectivity at very large scale, not a supplier of it.
The 264 prefixes are almost entirely /24s carved out of 139.15.0.0/16, Bosch's own legacy /16. Deaggregating a /16 into individual /24s is a well-known corporate pattern: a globally distributed company with sites, plants and regional egress points on several continents announces each site's block separately so traffic can be steered to the nearest exit and so a single site's space can be withdrawn without touching the rest.
Sampled reverse DNS lands on gwr3.fe.bosch.de — a gateway router under Bosch's own domain, exactly what you would expect at the edge of a corporate WAN.
Notable
- The AS exists to provide global internet access for Bosch worldwide; the registry contact sits in Stuttgart.
- 264 prefixes from essentially one /16 makes this AS a noticeable contributor to routing-table deaggregation for its size.
- The handle
CIAFS3is a good example of why an AS name is never evidence of identity.
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 5 prefixes · 67.58K addresses IPv6 16 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 21 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS9183- Registry name
- UNSPECIFIED
- Registrant
- BOSCH-MNT
- Abuse contact
- BD_IP_Abuse@bosch.com
- Registered
- 2002-08-19
- Last changed
- 2019-11-18
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 265 valid, 0 with no ROA
- ROAs
- 6 authorising AS9183
- ASPA
- no ASPA record
- IRR
- 100% registered · 265 of 265 announcements
- Route objects
- 286 naming AS9183
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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