AS39326: the HSO-GROUP network

AS39326 is an internet Autonomous System operated by HSO-GROUP (the United Kingdom). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS39326?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS39326 was assigned to HSO-GROUP by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS39326 currently announces 21 IPv4 block(s), totaling about 102.9 thousand addresses (102,912 in all), registered in the United Kingdom. Services from HSO-GROUP are reached through these addresses.

What it means to see AS39326 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS39326. That means the other end sits on the HSO-GROUP network (the United Kingdom). 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.