AS45361: the JCN-AS-KR Ulsan Jung-Ang Broadcasting Network network

AS45361 is an internet Autonomous System operated by JCN-AS-KR Ulsan Jung-Ang Broadcasting Network (South Korea). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS45361?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS45361 was assigned to JCN-AS-KR Ulsan Jung-Ang Broadcasting Network by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS45361 currently announces 12 IPv4 block(s), totaling about 151 thousand addresses (151,040 in all), registered in South Korea. Services from JCN-AS-KR Ulsan Jung-Ang Broadcasting Network are reached through these addresses.

What it means to see AS45361 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS45361. That means the other end sits on the JCN-AS-KR Ulsan Jung-Ang Broadcasting Network network (South Korea). 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.