AS30766: the GGEWNET-AS Dammstrasse 68 network

AS30766 is an internet Autonomous System operated by GGEWNET-AS Dammstrasse 68 (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS30766?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS30766 was assigned to GGEWNET-AS Dammstrasse 68 by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS30766 currently announces 12 IPv4 block(s), totaling about 12.3 thousand addresses (12,288 in all), registered in Germany. Services from GGEWNET-AS Dammstrasse 68 are reached through these addresses.

What it means to see AS30766 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS30766. That means the other end sits on the GGEWNET-AS Dammstrasse 68 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.