AS139220: the CHINANET-SICHUAN-CHUANXI-IDC Sichuan Chuanxn IDC network

AS139220 is an internet Autonomous System operated by CHINANET-SICHUAN-CHUANXI-IDC Sichuan Chuanxn IDC (China). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS139220?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS139220 was assigned to CHINANET-SICHUAN-CHUANXI-IDC Sichuan Chuanxn IDC by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS139220 currently announces 41 IPv4 block(s), totaling about 22.5 thousand addresses (22,528 in all), registered in China. Services from CHINANET-SICHUAN-CHUANXI-IDC Sichuan Chuanxn IDC are reached through these addresses.

What it means to see AS139220 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS139220. That means the other end sits on the CHINANET-SICHUAN-CHUANXI-IDC Sichuan Chuanxn IDC network (China). 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.