AS20205: the AMPLEX network

AS20205 is an internet Autonomous System operated by AMPLEX (the United States). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS20205?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS20205 was assigned to AMPLEX by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS20205 currently announces 9 IPv4 block(s), totaling about 13.3 thousand addresses (13,312 in all), registered in the United States. Services from AMPLEX are reached through these addresses.

What it means to see AS20205 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS20205. That means the other end sits on the AMPLEX network (the United States). 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.