AS26666: the INTERSERVER-LAX network

AS26666 is an internet Autonomous System operated by INTERSERVER-LAX (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 AS26666?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS26666 was assigned to INTERSERVER-LAX by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS26666 currently announces 36 IPv4 block(s), totaling about 24.3 thousand addresses (24,320 in all), registered in the United States. Services from INTERSERVER-LAX are reached through these addresses.

What it means to see AS26666 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS26666. That means the other end sits on the INTERSERVER-LAX 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.