AS5722: the Universidad Nacional de Colombia network

AS5722 is an internet Autonomous System operated by Universidad Nacional de Colombia (Colombia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS5722?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS5722 was assigned to Universidad Nacional de Colombia by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS5722 currently announces 12 IPv4 block(s), totaling about 65.5 thousand addresses (65,536 in all), registered in Colombia. Services from Universidad Nacional de Colombia are reached through these addresses.

What it means to see AS5722 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS5722. That means the other end sits on the Universidad Nacional de Colombia 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.