AS38631: the LINE LY Corporation network

AS38631 is an internet Autonomous System operated by LINE LY Corporation (Japan). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS38631?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS38631 was assigned to LINE LY Corporation by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS38631 currently announces 15 IPv4 block(s), totaling about 108.3 thousand addresses (108,288 in all), registered in Japan. Services from LINE LY Corporation are reached through these addresses.

What it means to see AS38631 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS38631. That means the other end sits on the LINE LY Corporation network (Japan). 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.