Autonomous system
AS9092 OPENSYSTEMS-AS Zurich, Switzerland
Unclassified RIPE
Summary
Open Systems AG
enterprise security legacy
AS9092 (OPENSYSTEMS-AS) is held by Open Systems AG, a Zurich-based managed security and networking company (Managed SASE/SD-WAN and MDR), founded 1990 and acquired by Swiss Post in 2024.
What it's used for
The AS backs Open Systems' own service infrastructure rather than a mass-market access network. It announces around 5,120 IPv4 addresses (mainly 213.156.224.0/20 and several /24s) plus an IPv6 prefix, with roughly 49 observed BGP neighbours. Sampled reverse DNS returns firewall/gateway names such as fw-i33-out.open.ch and fw-a13-out.open.ch, consistent with a security operator's managed-edge estate.
Notable
The space has been announced since 2000. The relatively high peering count for a small address footprint reflects a security-services company that connects to many customer and partner networks.
Interesting
The open.ch firewall PTR naming (fw-...-out) is a direct fingerprint of Open Systems' core business: it operates managed security gateways as a service for enterprises across many countries.
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
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| SwissIX | Zurich, Switzerland | 91.206.52.34 |
| Equinix Internet Exchange Zurich | Zurich, Switzerland | 194.42.48.59 |
Transit providers
10 upstream, 0 downstream and 17 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 5.12K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 4 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS9092- Registry name
- OPENSYSTEMS-AS
- Registrant
- AS9092-MNT
- Abuse contact
- support@open.ch
- Registered
- 1970-01-01
- Last changed
- 2025-08-26
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 8 authorising AS9092
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 5 naming AS9092
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: 442 networks and 1,781 prefixes, as published 2026-10-16. 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