AS58524: the AS58524 FSM Telecom network

AS58524 is an internet Autonomous System operated by AS58524 FSM Telecom (FM). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS58524?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS58524 was assigned to AS58524 FSM Telecom by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS58524 currently announces 2 IPv4 block(s), totaling about 1 thousand addresses (1,024 in all), registered in FM. Services from AS58524 FSM Telecom are reached through these addresses.

What it means to see AS58524 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS58524. That means the other end sits on the AS58524 FSM Telecom network (FM). 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.