AS12350 — VTX-NETWORK

AS12350 announces 29 IPv4 prefixes covering 310,016 addresses and 2 IPv6 prefixes.

About this network

One of Switzerland's long-standing independent providers, selling access and business connectivity nationally.

What it's used for

• Residential and business internet across Switzerland. 310,016 addresses over 29 announced prefixes, with 21 observed BGP neighbours and two IPv6 /32s.

Notable

• Two full /16s, 144.85.0.0/16 and 212.254.0.0/16, plus three /17s. For a network this size the inventory is unusually coarse — large blocks announced whole rather than split.
• The netnames date almost every allocation: CH-VTX-960404, 960612, 960708, 961017, then 980218, 980422, 980522, 990330, 20000704 and 20010830. Four allocations in 1996 alone.

Interesting

• The registrant field alternates between "VTX SA" and "VTX AG" across the blocks. Those are the same corporate form written in French and in German — Société Anonyme and Aktiengesellschaft — and a Swiss company operating in both language regions is legitimately both. The registry has simply recorded whichever name whoever filed the request was using that day.
• Four allocations inside a single year is the signature of a provider growing faster than its forecasts. Each request is a separate trip to the registry with a fresh justification of need, and doing that four times over means the address plan was being outrun.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 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
• 195.13.52.0/23
• 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
• 2001:4c78::/32
• 2a03:a360::/32

Upstream networks

• AS34177 Celeste SAS
• AS30781 Free Pro SAS
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.

Downstream networks

• AS215825 Baptiste A. Ferrando
• AS205393 Aeroport International de Geneve

Adjacent networks

• AS34177 Celeste SAS
• AS215825 Baptiste A. Ferrando
• AS205393 Aeroport International de Geneve
• AS30781 Free Pro SAS
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.

Internet exchanges

• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• SwissIX — Zurich, Switzerland
• Equinix Internet Exchange Paris — Paris, France
• CERN IXP / Equinix Internet Exchange Geneva — Geneva, Switzerland