AS50666: the LIGAT network
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Testar grátis 14 dias →AS50666 is an internet Autonomous System operated by LIGAT (Portugal). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS50666?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS50666 was assigned to LIGAT by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS50666 currently announces 3 IPv4 block(s), totaling about 1.8 thousand addresses (1,792 in all), registered in Portugal. Services from LIGAT are reached through these addresses.
What it means to see AS50666 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS50666. That means the other end sits on the LIGAT network (Portugal). 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 AS50666?
AS50666 is assigned to LIGAT, registered in Portugal.
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 AS50666 control?
AS50666 currently announces about 1.8 thousand routed IPv4 addresses.