AS27747: the Telecentro S.A. network

AS27747 is an internet Autonomous System operated by Telecentro S.A. (Argentina). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS27747?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS27747 was assigned to Telecentro S.A. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS27747 currently announces 30 IPv4 block(s), totaling about 623.1 thousand addresses (623,104 in all), registered in Argentina. Services from Telecentro S.A. are reached through these addresses.

What it means to see AS27747 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS27747. That means the other end sits on the Telecentro S.A. network (Argentina). 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.