AS7668: the HTCN Hokuriku Telecommunication Network Co. network

AS7668 is an internet Autonomous System operated by HTCN Hokuriku Telecommunication Network Co. (Japan). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS7668?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS7668 was assigned to HTCN Hokuriku Telecommunication Network Co. by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS7668 currently announces 7 IPv4 block(s), totaling about 29.7 thousand addresses (29,696 in all), registered in Japan. Services from HTCN Hokuriku Telecommunication Network Co. are reached through these addresses.

What it means to see AS7668 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS7668. That means the other end sits on the HTCN Hokuriku Telecommunication Network Co. 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.