AS3786: the LGDACOM LG DACOM Corporation network

AS3786 is an internet Autonomous System operated by LGDACOM LG DACOM Corporation (South Korea). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS3786?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS3786 was assigned to LGDACOM LG DACOM Corporation by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS3786 currently announces 968 IPv4 block(s), totaling about 8.1 million addresses (8,066,048 in all), registered in South Korea. Services from LGDACOM LG DACOM Corporation are reached through these addresses.

What it means to see AS3786 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS3786. That means the other end sits on the LGDACOM LG DACOM Corporation 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.