AS50533: the ITENOS ITENOS GmbH network

AS50533 is an internet Autonomous System operated by ITENOS ITENOS GmbH (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS50533?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS50533 was assigned to ITENOS ITENOS GmbH by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS50533 currently announces 4 IPv4 block(s), totaling about 20 thousand addresses (19,968 in all), registered in Germany. Services from ITENOS ITENOS GmbH are reached through these addresses.

What it means to see AS50533 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS50533. That means the other end sits on the ITENOS ITENOS GmbH network (Germany). 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.