AS20743 — SWX Zurich, Switzerland

AS20743 announces 3 IPv4 prefixes covering 8,704 addresses and 2 IPv6 prefixes.

About this network

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-19910205 across 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 announcer SWX SIX Swiss Exchange AG as 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.

Announced prefixes

• 146.109.145.0/24
• 146.109.153.0/24
• 146.109.160.0/19
• 2a01:4642:100::/40
• 2a01:4642:c800::/40

Upstream networks

• AS3303 Swisscom (Schweiz) AG
• AS6730 Sunrise GmbH

Adjacent networks

• AS3303 Swisscom (Schweiz) AG
• AS6730 Sunrise GmbH