AS24723: the ATMAN-OFFICE-INTERNET-AS ATMAN network

AS24723 is an internet Autonomous System operated by ATMAN-OFFICE-INTERNET-AS ATMAN (Poland). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS24723?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS24723 was assigned to ATMAN-OFFICE-INTERNET-AS ATMAN by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS24723 currently announces 11 IPv4 block(s), totaling about 5.9 thousand addresses (5,888 in all), registered in Poland. Services from ATMAN-OFFICE-INTERNET-AS ATMAN are reached through these addresses.

What it means to see AS24723 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS24723. That means the other end sits on the ATMAN-OFFICE-INTERNET-AS ATMAN network (Poland). 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.