AS3958: the AIRCANADA network
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Testar grátis 14 dias →AS3958 is an internet Autonomous System operated by AIRCANADA (Canada). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS3958?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS3958 was assigned to AIRCANADA by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS3958 currently announces 6 IPv4 block(s), totaling about 13.6 thousand addresses (13,568 in all), registered in Canada. Services from AIRCANADA are reached through these addresses.
What it means to see AS3958 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS3958. That means the other end sits on the AIRCANADA network (Canada). 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 AS3958?
AS3958 is assigned to AIRCANADA, registered in Canada.
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 AS3958 control?
AS3958 currently announces about 13.6 thousand routed IPv4 addresses.