AS61880: the Hospital de Clinicas de Porto Alegre network

AS61880 is an internet Autonomous System operated by Hospital de Clinicas de Porto Alegre (Brazil). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS61880?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS61880 was assigned to Hospital de Clinicas de Porto Alegre by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS61880 currently announces 1 IPv4 block(s), totaling about 1 thousand addresses (1,024 in all), registered in Brazil. Services from Hospital de Clinicas de Porto Alegre are reached through these addresses.

What it means to see AS61880 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS61880. That means the other end sits on the Hospital de Clinicas de Porto Alegre 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.