AS27940: the Cooperativa Colonia Caroya network

AS27940 is an internet Autonomous System operated by Cooperativa Colonia Caroya (Argentina). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS27940?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS27940 was assigned to Cooperativa Colonia Caroya by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS27940 currently announces 4 IPv4 block(s), totaling about 6.4 thousand addresses (6,400 in all), registered in Argentina. Services from Cooperativa Colonia Caroya are reached through these addresses.

What it means to see AS27940 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS27940. That means the other end sits on the Cooperativa Colonia Caroya 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.