AS39913: the CLOUD4YOU network

Equipe PC Monitor · Atualizado em 19/09/2026

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AS39913 is an internet Autonomous System operated by CLOUD4YOU (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS39913?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS39913 was assigned to CLOUD4YOU by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS39913 currently announces 3 IPv4 block(s), totaling about 3.1 thousand addresses (3,072 in all), registered in Germany. Services from CLOUD4YOU are reached through these addresses.

What it means to see AS39913 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS39913. That means the other end sits on the CLOUD4YOU network (Germany). 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.

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Perguntas frequentes

Who owns AS39913?

AS39913 is assigned to CLOUD4YOU, registered in Germany.

What is an ASN (Autonomous System)?

It is a unique number identifying a network with its own routing policy on the internet. RIRs (regional registries) assign these numbers to carriers, ISPs and companies.

How many IP addresses does AS39913 control?

AS39913 currently announces about 3.1 thousand routed IPv4 addresses.

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