AS12350: the VTX-NETWORK network

AS12350 is an internet Autonomous System operated by VTX-NETWORK (Switzerland). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS12350?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS12350 was assigned to VTX-NETWORK by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS12350 currently announces 24 IPv4 block(s), totaling about 310 thousand addresses (310,016 in all), registered in Switzerland. Services from VTX-NETWORK are reached through these addresses.

What it means to see AS12350 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS12350. That means the other end sits on the VTX-NETWORK network (Switzerland). It can be legitimate — a cloud service, an ISP, a CDN — or an unexpected connection worth checking.

How to see every connection and network your devices reach

Tracing one connection's ASN at a time is tedious. Sentinela, by PC Monitor, maps the devices on your network, shows what is exposed to the internet and helps flag suspicious connections and devices — running on your Windows. Meet Sentinela.