AS29134: the IGNUM-AS Czech Republic network

AS29134 is an internet Autonomous System operated by IGNUM-AS Czech Republic (Czechia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS29134?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS29134 was assigned to IGNUM-AS Czech Republic by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS29134 currently announces 14 IPv4 block(s), totaling about 20 thousand addresses (19,968 in all), registered in Czechia. Services from IGNUM-AS Czech Republic are reached through these addresses.

What it means to see AS29134 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS29134. That means the other end sits on the IGNUM-AS Czech Republic network (Czechia). 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.