AS47372: the BIG3AS network
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Testar grátis 14 dias →AS47372 is an internet Autonomous System operated by BIG3AS (Germany). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS47372?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS47372 was assigned to BIG3AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS47372 currently announces 2 IPv4 block(s), totaling about 2.6 thousand addresses (2,560 in all), registered in Germany. Services from BIG3AS are reached through these addresses.
What it means to see AS47372 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS47372. That means the other end sits on the BIG3AS 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 AS47372?
AS47372 is assigned to BIG3AS, 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 AS47372 control?
AS47372 currently announces about 2.6 thousand routed IPv4 addresses.