AS38951: the TKT-AS OJSC TKT network

AS38951 is an internet Autonomous System operated by TKT-AS OJSC TKT (Russia). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS38951?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS38951 was assigned to TKT-AS OJSC TKT by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS38951 currently announces 5 IPv4 block(s), totaling about 16.4 thousand addresses (16,384 in all), registered in Russia. Services from TKT-AS OJSC TKT are reached through these addresses.

What it means to see AS38951 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS38951. That means the other end sits on the TKT-AS OJSC TKT 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.