AS20743 SWX SIX Swiss Exchange AG

SWX SIX Swiss Exchange AG · registered in Switzerland

IPv4 addresses8,7047 prefixes · <0.001% of announced IPv4

Rank in Switzerland#97largest network in CH by IPv4 space, of 741 · 0.06% of CH

Rank worldwide#9,902of 79,396 networks with IPv4

IPv6512 x /482 prefixes

CountrySwitzerland783 ASNs registered there

Open AS20743 in ASN lookup Look up an IP in this network (146.109.145.1) All networks in Switzerland

IPv4 prefixes

All 7 prefixes, in address order.

146.109.145.0/24
146.109.153.0/24
146.109.160.0/23
146.109.162.0/23
146.109.164.0/22
146.109.168.0/21
146.109.176.0/20

IPv6 prefixes

All 2 prefixes.

2a01:4642:100::/40
2a01:4642:c800::/40

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources