AS19200: the Universidade Federal do Rio Grande do Sul network

AS19200 is an internet Autonomous System operated by Universidade Federal do Rio Grande do Sul (Brazil). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS19200?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS19200 was assigned to Universidade Federal do Rio Grande do Sul by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS19200 currently announces 2 IPv4 block(s), totaling about 66.6 thousand addresses (66,560 in all), registered in Brazil. Services from Universidade Federal do Rio Grande do Sul are reached through these addresses.

What it means to see AS19200 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS19200. That means the other end sits on the Universidade Federal do Rio Grande do Sul network (Brazil). 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.