AS13247: the ERDENREICH Downstreams network

AS13247 is an internet Autonomous System operated by ERDENREICH Downstreams (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS13247?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS13247 was assigned to ERDENREICH Downstreams by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS13247 currently announces 8 IPv4 block(s), totaling about 18.2 thousand addresses (18,176 in all), registered in Germany. Services from ERDENREICH Downstreams are reached through these addresses.

What it means to see AS13247 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS13247. That means the other end sits on the ERDENREICH Downstreams 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.