AS201447: the AS_CNB network
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Testar grátis 14 dias →AS201447 is an internet Autonomous System operated by AS_CNB (Czechia). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS201447?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS201447 was assigned to AS_CNB by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS201447 currently announces 2 IPv4 block(s), totaling about 1 thousand addresses (1,024 in all), registered in Czechia. Services from AS_CNB are reached through these addresses.
What it means to see AS201447 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS201447. That means the other end sits on the AS_CNB network (Czechia). 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 AS201447?
AS201447 is assigned to AS_CNB, registered in Czechia.
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 AS201447 control?
AS201447 currently announces about 1 thousand routed IPv4 addresses.