AS1101: the IP-EEND-AS IP-EEND BV network

AS1101 is an internet Autonomous System operated by IP-EEND-AS IP-EEND BV (the Netherlands). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS1101?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS1101 was assigned to IP-EEND-AS IP-EEND BV by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS1101 currently announces 12 IPv4 block(s), totaling about 1.9 million addresses (1,904,128 in all), registered in the Netherlands. Services from IP-EEND-AS IP-EEND BV are reached through these addresses.

What it means to see AS1101 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS1101. That means the other end sits on the IP-EEND-AS IP-EEND BV network (the Netherlands). 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.