AS27845: the Empresa de Recursos Tecnologicos S.A E.S.P network

AS27845 is an internet Autonomous System operated by Empresa de Recursos Tecnologicos S.A E.S.P (Colombia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS27845?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS27845 was assigned to Empresa de Recursos Tecnologicos S.A E.S.P by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS27845 currently announces 14 IPv4 block(s), totaling about 19.7 thousand addresses (19,712 in all), registered in Colombia. Services from Empresa de Recursos Tecnologicos S.A E.S.P are reached through these addresses.

What it means to see AS27845 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS27845. That means the other end sits on the Empresa de Recursos Tecnologicos S.A E.S.P network (Colombia). 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.