AS57856: the LYCEUM1-AS network
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Testar grátis 14 dias →AS57856 is an internet Autonomous System operated by LYCEUM1-AS (Russia). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS57856?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS57856 was assigned to LYCEUM1-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS57856 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in Russia. Services from LYCEUM1-AS are reached through these addresses.
What it means to see AS57856 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS57856. That means the other end sits on the LYCEUM1-AS network (Russia). 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 AS57856?
AS57856 is assigned to LYCEUM1-AS, registered in Russia.
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 AS57856 control?
AS57856 currently announces 256 routed IPv4 addresses.