AS1836: the GREEN green.ch AG Autonomous System network

AS1836 is an internet Autonomous System operated by GREEN green.ch AG Autonomous System (Switzerland). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS1836?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS1836 was assigned to GREEN green.ch AG Autonomous System by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS1836 currently announces 38 IPv4 block(s), totaling about 491 thousand addresses (491,008 in all), registered in Switzerland. Services from GREEN green.ch AG Autonomous System are reached through these addresses.

What it means to see AS1836 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS1836. That means the other end sits on the GREEN green.ch AG Autonomous System 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.