AS45370: the BROADBANDIDC-AS-KR BROADBANDIDC network

AS45370 is an internet Autonomous System operated by BROADBANDIDC-AS-KR BROADBANDIDC (South Korea). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS45370?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS45370 was assigned to BROADBANDIDC-AS-KR BROADBANDIDC by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS45370 currently announces 61 IPv4 block(s), totaling about 135.4 thousand addresses (135,424 in all), registered in South Korea. Services from BROADBANDIDC-AS-KR BROADBANDIDC are reached through these addresses.

What it means to see AS45370 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS45370. That means the other end sits on the BROADBANDIDC-AS-KR BROADBANDIDC 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.