AS20686: the BISPING ISP & Citycarrier, Germany network

AS20686 is an internet Autonomous System operated by BISPING ISP & Citycarrier, Germany (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS20686?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS20686 was assigned to BISPING ISP & Citycarrier, Germany by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS20686 currently announces 12 IPv4 block(s), totaling about 87.6 thousand addresses (87,552 in all), registered in Germany. Services from BISPING ISP & Citycarrier, Germany are reached through these addresses.

What it means to see AS20686 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS20686. That means the other end sits on the BISPING ISP & Citycarrier, Germany 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.