AS27901: the Pacifico Cable SPA. network

AS27901 is an internet Autonomous System operated by Pacifico Cable SPA. (Chile). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS27901?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS27901 was assigned to Pacifico Cable SPA. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS27901 currently announces 16 IPv4 block(s), totaling about 52 thousand addresses (51,968 in all), registered in Chile. Services from Pacifico Cable SPA. are reached through these addresses.

What it means to see AS27901 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS27901. That means the other end sits on the Pacifico Cable SPA. network (Chile). 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.