AS21022: the BID-AS Banca de Investitii si Dezvoltare SA network

AS21022 is an internet Autonomous System operated by BID-AS Banca de Investitii si Dezvoltare SA (Romania). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS21022?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS21022 was assigned to BID-AS Banca de Investitii si Dezvoltare SA by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS21022 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in Romania. Services from BID-AS Banca de Investitii si Dezvoltare SA are reached through these addresses.

What it means to see AS21022 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS21022. That means the other end sits on the BID-AS Banca de Investitii si Dezvoltare SA network (Romania). 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.