AS3301: the TELIANET-SWEDEN Telia Company network

AS3301 is an internet Autonomous System operated by TELIANET-SWEDEN Telia Company (Sweden). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS3301?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS3301 was assigned to TELIANET-SWEDEN Telia Company by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS3301 currently announces 233 IPv4 block(s), totaling about 6.5 million addresses (6,525,696 in all), registered in Sweden. Services from TELIANET-SWEDEN Telia Company are reached through these addresses.

What it means to see AS3301 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS3301. That means the other end sits on the TELIANET-SWEDEN Telia Company network (Sweden). 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.