AS42421: the TURKIYEFINANS network
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Testar grátis 14 dias →AS42421 is an internet Autonomous System operated by TURKIYEFINANS (Turkey). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS42421?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS42421 was assigned to TURKIYEFINANS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS42421 currently announces 1 IPv4 block(s), totaling about 1.5 thousand addresses (1,536 in all), registered in Turkey. Services from TURKIYEFINANS are reached through these addresses.
What it means to see AS42421 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS42421. That means the other end sits on the TURKIYEFINANS network (Turkey). 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 AS42421?
AS42421 is assigned to TURKIYEFINANS, registered in Turkey.
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 AS42421 control?
AS42421 currently announces about 1.5 thousand routed IPv4 addresses.