AS30221: the T3COM network
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Testar grátis 14 dias →AS30221 is an internet Autonomous System operated by T3COM (the United States). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS30221?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS30221 was assigned to T3COM by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS30221 currently announces 13 IPv4 block(s), totaling about 14.8 thousand addresses (14,848 in all), registered in the United States. Services from T3COM are reached through these addresses.
What it means to see AS30221 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS30221. That means the other end sits on the T3COM network (the United States). 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 AS30221?
AS30221 is assigned to T3COM, registered in the United States.
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 AS30221 control?
AS30221 currently announces about 14.8 thousand routed IPv4 addresses.