AS12651 IPWORLDCOM IP worldcom SA

IPWORLDCOM IP worldcom SA · registered in Switzerland

IPv4 addresses32,7682 prefixes · 0.001% of announced IPv4

Rank in Switzerland#45largest network in CH by IPv4 space, of 741 · 0.22% of CH

Rank worldwide#4,772of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountrySwitzerland783 ASNs registered there

Open AS12651 in ASN lookup Look up an IP in this network (83.172.192.1) All networks in Switzerland

IPv4 prefixes

All 2 prefixes, in address order.

83.172.192.0/18
212.74.128.0/18

IPv6 prefixes

All 1 prefix.

2a10:cf00::/29

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AS24952#46 FIRMENICH-AS Firmenich SA32,768

AS213196#47 USB Universitaetsspital Basel32,768

AS42346#48 AS-TINEO NorthC Schweiz AG31,488

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