AS31662: the KNSURSELVA Kommunikations Netz Surselva network

AS31662 is an internet Autonomous System operated by KNSURSELVA Kommunikations Netz Surselva (Switzerland). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS31662?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS31662 was assigned to KNSURSELVA Kommunikations Netz Surselva by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS31662 currently announces 10 IPv4 block(s), totaling about 15.1 thousand addresses (15,104 in all), registered in Switzerland. Services from KNSURSELVA Kommunikations Netz Surselva are reached through these addresses.

What it means to see AS31662 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS31662. That means the other end sits on the KNSURSELVA Kommunikations Netz Surselva 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.