AS212533: the AS_BST network
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Testar grátis 14 dias →AS212533 is an internet Autonomous System operated by AS_BST (Bulgaria). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS212533?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS212533 was assigned to AS_BST by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS212533 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in Bulgaria. Services from AS_BST are reached through these addresses.
What it means to see AS212533 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS212533. That means the other end sits on the AS_BST network (Bulgaria). 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 AS212533?
AS212533 is assigned to AS_BST, registered in Bulgaria.
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 AS212533 control?
AS212533 currently announces 256 routed IPv4 addresses.