AS29580: the A1BG_RSG A1 EAD network

AS29580 is an internet Autonomous System operated by A1BG_RSG A1 EAD (Bulgaria). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS29580?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS29580 was assigned to A1BG_RSG A1 EAD by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS29580 currently announces 190 IPv4 block(s), totaling about 263.7 thousand addresses (263,680 in all), registered in Bulgaria. Services from A1BG_RSG A1 EAD are reached through these addresses.

What it means to see AS29580 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS29580. That means the other end sits on the A1BG_RSG A1 EAD network (Bulgaria). 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.