AS197451: the VUTBR-AS network
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Testar grátis 14 dias →AS197451 is an internet Autonomous System operated by VUTBR-AS (Czechia). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS197451?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS197451 was assigned to VUTBR-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS197451 currently announces 4 IPv4 block(s), totaling about 66.8 thousand addresses (66,816 in all), registered in Czechia. Services from VUTBR-AS are reached through these addresses.
What it means to see AS197451 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS197451. That means the other end sits on the VUTBR-AS network (Czechia). 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 AS197451?
AS197451 is assigned to VUTBR-AS, registered in Czechia.
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 AS197451 control?
AS197451 currently announces about 66.8 thousand routed IPv4 addresses.