AS13446: the AS-NETZERO network

AS13446 is an internet Autonomous System operated by AS-NETZERO (the United States). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS13446?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS13446 was assigned to AS-NETZERO by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS13446 currently announces 19 IPv4 block(s), totaling about 27.6 thousand addresses (27,648 in all), registered in the United States. Services from AS-NETZERO are reached through these addresses.

What it means to see AS13446 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS13446. That means the other end sits on the AS-NETZERO network (the United States). 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.