AS29226: the MASTERTEL-AS Moscow, Russia network

AS29226 is an internet Autonomous System operated by MASTERTEL-AS Moscow, Russia (Russia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS29226?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS29226 was assigned to MASTERTEL-AS Moscow, Russia by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS29226 currently announces 38 IPv4 block(s), totaling about 50.9 thousand addresses (50,944 in all), registered in Russia. Services from MASTERTEL-AS Moscow, Russia are reached through these addresses.

What it means to see AS29226 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS29226. That means the other end sits on the MASTERTEL-AS Moscow, Russia network (Russia). 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.