AS12350 VTX-NETWORK VTX Services SA

VTX-NETWORK VTX Services SA · registered in Switzerland

IPv4 addresses309,50428 prefixes · 0.010% of announced IPv4

Rank in Switzerland#9largest network in CH by IPv4 space, of 741 · 2.10% of CH

Rank worldwide#791of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountrySwitzerland783 ASNs registered there

Open AS12350 in ASN lookup Look up an IP in this network (81.23.64.1) All networks in Switzerland

IPv4 prefixes

All 28 prefixes, in address order.

81.23.64.0/20
144.85.0.0/16
185.133.28.0/22
185.242.60.0/23
193.41.193.0/24
193.246.207.0/24
193.247.66.0/24
193.247.107.0/24
193.247.108.0/24
193.247.110.0/23
194.38.64.0/19
194.38.160.0/19
194.148.4.0/22
194.148.8.0/21
194.148.16.0/20
194.148.32.0/20
194.148.48.0/22
194.148.60.0/22
194.148.96.0/19
195.15.0.0/17
212.28.128.0/19
212.40.0.0/19
212.109.64.0/19
212.147.0.0/17
212.232.128.0/17
212.254.0.0/16
213.5.152.0/21
213.162.0.0/19

IPv6 prefixes

All 2 prefixes.

2001:4c78::/32
2a03:a360::/32

Similar-sized networks in Switzerland

ASNNameIPv4 addresses

AS513#6 CERN CERN - European Organization for Nuclear Research354,816

AS8803#7 MIGROS Migros-Genossenschafts-Bund330,240

AS15600#8 QUICKLINE Quickline AG319,488

AS62044#10 ZSCALER-EMEA Zscaler Switzerland GmbH181,248

AS8758#11 IWAY Iway AG175,600

AS12511#12 CH-POSTNETZ Die Schweizerische Post AG165,888

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