AS5538: the SIGMANET-NIC network
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Testar grátis 14 dias →AS5538 is an internet Autonomous System operated by SIGMANET-NIC (Latvia). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS5538?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS5538 was assigned to SIGMANET-NIC by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS5538 currently announces 10 IPv4 block(s), totaling about 18.4 thousand addresses (18,432 in all), registered in Latvia. Services from SIGMANET-NIC are reached through these addresses.
What it means to see AS5538 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS5538. That means the other end sits on the SIGMANET-NIC network (Latvia). 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 AS5538?
AS5538 is assigned to SIGMANET-NIC, registered in Latvia.
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 AS5538 control?
AS5538 currently announces about 18.4 thousand routed IPv4 addresses.