AS59105: the HOMENOC Home NOC Operators Group network

AS59105 is an internet Autonomous System operated by HOMENOC Home NOC Operators Group (Japan). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS59105?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS59105 was assigned to HOMENOC Home NOC Operators Group by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS59105 currently announces 4 IPv4 block(s), totaling about 2 thousand addresses (2,048 in all), registered in Japan. Services from HOMENOC Home NOC Operators Group are reached through these addresses.

What it means to see AS59105 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS59105. That means the other end sits on the HOMENOC Home NOC Operators Group 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.