AS39028: the ULSK-AS network
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Testar grátis 14 dias →AS39028 is an internet Autonomous System operated by ULSK-AS (Russia). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS39028?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS39028 was assigned to ULSK-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS39028 currently announces 13 IPv4 block(s), totaling about 27.4 thousand addresses (27,392 in all), registered in Russia. Services from ULSK-AS are reached through these addresses.
What it means to see AS39028 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS39028. That means the other end sits on the ULSK-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 AS39028?
AS39028 is assigned to ULSK-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 AS39028 control?
AS39028 currently announces about 27.4 thousand routed IPv4 addresses.