AS55278: the CIG-ASN network
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Testar grátis 14 dias →AS55278 is an internet Autonomous System operated by CIG-ASN (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 AS55278?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS55278 was assigned to CIG-ASN by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS55278 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in the United States. Services from CIG-ASN are reached through these addresses.
What it means to see AS55278 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS55278. That means the other end sits on the CIG-ASN 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 AS55278?
AS55278 is assigned to CIG-ASN, 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 AS55278 control?
AS55278 currently announces 256 routed IPv4 addresses.