AS18182: the SONET-TW Sony Network Taiwan Limited network

AS18182 is an internet Autonomous System operated by SONET-TW Sony Network Taiwan Limited (Taiwan). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS18182?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS18182 was assigned to SONET-TW Sony Network Taiwan Limited by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS18182 currently announces 13 IPv4 block(s), totaling about 320.3 thousand addresses (320,256 in all), registered in Taiwan. Services from SONET-TW Sony Network Taiwan Limited are reached through these addresses.

What it means to see AS18182 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS18182. That means the other end sits on the SONET-TW Sony Network Taiwan Limited network (Taiwan). 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.