AS9569: the HCNSEOCHOCATV-AS-KR SEOCHO CABLE SYSTEMS CO., LTD. network

AS9569 is an internet Autonomous System operated by HCNSEOCHOCATV-AS-KR SEOCHO CABLE SYSTEMS CO., LTD. (South Korea). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS9569?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS9569 was assigned to HCNSEOCHOCATV-AS-KR SEOCHO CABLE SYSTEMS CO., LTD. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS9569 currently announces 33 IPv4 block(s), totaling about 56.3 thousand addresses (56,320 in all), registered in South Korea. Services from HCNSEOCHOCATV-AS-KR SEOCHO CABLE SYSTEMS CO., LTD. are reached through these addresses.

What it means to see AS9569 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS9569. That means the other end sits on the HCNSEOCHOCATV-AS-KR SEOCHO CABLE SYSTEMS CO., LTD. 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.