AS18140: the YAHOO-18140 LY Corporation network
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Testar grátis 14 dias →AS18140 is an internet Autonomous System operated by YAHOO-18140 LY Corporation (Japan). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS18140?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS18140 was assigned to YAHOO-18140 LY Corporation by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS18140 currently announces 1 IPv4 block(s), totaling about 4.1 thousand addresses (4,096 in all), registered in Japan. Services from YAHOO-18140 LY Corporation are reached through these addresses.
What it means to see AS18140 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS18140. That means the other end sits on the YAHOO-18140 LY Corporation network (Japan). 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 AS18140?
AS18140 is assigned to YAHOO-18140 LY Corporation, registered in Japan.
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 AS18140 control?
AS18140 currently announces about 4.1 thousand routed IPv4 addresses.