AS273400: the MUGO TELECOMUNICACOES LTDA network

AS273400 is an internet Autonomous System operated by MUGO TELECOMUNICACOES LTDA (Brazil). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS273400?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS273400 was assigned to MUGO TELECOMUNICACOES LTDA by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS273400 currently announces 1 IPv4 block(s), totaling 512 addresses (512 in all), registered in Brazil. Services from MUGO TELECOMUNICACOES LTDA are reached through these addresses.

What it means to see AS273400 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS273400. That means the other end sits on the MUGO TELECOMUNICACOES LTDA 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.