Autonomous system
AS20743 SWX Zurich, Switzerland
Unclassified RIPE
Summary
SIX Swiss Exchange
business finance exchange infrastructure
SWX is the autonomous system for SIX Swiss Exchange AG, the operator of Switzerland's principal stock exchange.
What it's used for
- The address space carries internal corporate infrastructure for the exchange, evidenced by the uniform netname
CH-PROCUREMENT-19910205across all registered prefixes. - The AS announces 8704 IPv4 addresses across 7 prefixes and 2 IPv6 prefixes, while maintaining only 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
Notable
- Registrants for all listed prefixes are
SIX Group Services AG, which aligns with the announcerSWX SIX Swiss Exchange AGas part of the same corporate group. - The operator was formerly known as SWX Swiss Exchange before rebranding to SIX Swiss Exchange.
- The inventory consists of a single contiguous block in the 146.109.0.0/16 range, subdivided into seven prefixes of varying sizes.
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 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 8.70K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CH | Switzerland | 9 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS20743- Registry name
- SWX
- Registrant
- SIX Swiss Exchange AG
- Abuse contact
- dnsadmin@six-group.com
- Registered
- 2002-05-17
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 83% valid · 5 valid, 1 with no ROA
- ROAs
- 6 authorising AS20743
- ASPA
- no ASPA record
- IRR
- 83% registered · 5 of 6 announcements 1 other origin
- Route objects
- 26 naming AS20743
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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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