AS18678: the INTERNEXA S.A. E.S.P network

AS18678 is an internet Autonomous System operated by INTERNEXA 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 AS18678?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS18678 was assigned to INTERNEXA 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

AS18678 currently announces 63 IPv4 block(s), totaling about 128.8 thousand addresses (128,768 in all), registered in Colombia. Services from INTERNEXA S.A. E.S.P are reached through these addresses.

What it means to see AS18678 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS18678. That means the other end sits on the INTERNEXA 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.