AS61866: the INTELBRAS S.A. INDUSTRIA DE TELECOMUNICACAO ELETRO network

AS61866 is an internet Autonomous System operated by INTELBRAS S.A. INDUSTRIA DE TELECOMUNICACAO ELETRO (Brazil). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS61866?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS61866 was assigned to INTELBRAS S.A. INDUSTRIA DE TELECOMUNICACAO ELETRO by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS61866 currently announces 4 IPv4 block(s), totaling about 3.3 thousand addresses (3,328 in all), registered in Brazil. Services from INTELBRAS S.A. INDUSTRIA DE TELECOMUNICACAO ELETRO are reached through these addresses.

What it means to see AS61866 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS61866. That means the other end sits on the INTELBRAS S.A. INDUSTRIA DE TELECOMUNICACAO ELETRO 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.