AS133776: the CHINATELECOM-FUJIAN-QUANZHOU-IDC1 Quanzhou network

AS133776 is an internet Autonomous System operated by CHINATELECOM-FUJIAN-QUANZHOU-IDC1 Quanzhou (China). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS133776?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS133776 was assigned to CHINATELECOM-FUJIAN-QUANZHOU-IDC1 Quanzhou by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS133776 currently announces 28 IPv4 block(s), totaling about 45.3 thousand addresses (45,312 in all), registered in China. Services from CHINATELECOM-FUJIAN-QUANZHOU-IDC1 Quanzhou are reached through these addresses.

What it means to see AS133776 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS133776. That means the other end sits on the CHINATELECOM-FUJIAN-QUANZHOU-IDC1 Quanzhou 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.