AS39381: the SIG-DSI network
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Testar grátis 14 dias →AS39381 is an internet Autonomous System operated by SIG-DSI (Switzerland). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS39381?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS39381 was assigned to SIG-DSI by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS39381 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in Switzerland. Services from SIG-DSI are reached through these addresses.
What it means to see AS39381 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS39381. That means the other end sits on the SIG-DSI network (Switzerland). 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 AS39381?
AS39381 is assigned to SIG-DSI, registered in Switzerland.
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 AS39381 control?
AS39381 currently announces 256 routed IPv4 addresses.