AS4274: the ERX-AU-NET Assumption University network

AS4274 is an internet Autonomous System operated by ERX-AU-NET Assumption University (Thailand). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS4274?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS4274 was assigned to ERX-AU-NET Assumption University by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS4274 currently announces 6 IPv4 block(s), totaling about 66.6 thousand addresses (66,560 in all), registered in Thailand. Services from ERX-AU-NET Assumption University are reached through these addresses.

What it means to see AS4274 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS4274. That means the other end sits on the ERX-AU-NET Assumption University network (Thailand). 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.