AS8972: the GD-EMEA-DC-SXB1 network

AS8972 is an internet Autonomous System operated by GD-EMEA-DC-SXB1 (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS8972?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS8972 was assigned to GD-EMEA-DC-SXB1 by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS8972 currently announces 67 IPv4 block(s), totaling about 103.2 thousand addresses (103,167 in all), registered in Germany. Services from GD-EMEA-DC-SXB1 are reached through these addresses.

What it means to see AS8972 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS8972. That means the other end sits on the GD-EMEA-DC-SXB1 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.