AS4373: the OCLC-AS network
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Testar grátis 14 dias →AS4373 is an internet Autonomous System operated by OCLC-AS (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 AS4373?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS4373 was assigned to OCLC-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS4373 currently announces 14 IPv4 block(s), totaling about 72.7 thousand addresses (72,704 in all), registered in the United States. Services from OCLC-AS are reached through these addresses.
What it means to see AS4373 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS4373. That means the other end sits on the OCLC-AS 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 AS4373?
AS4373 is assigned to OCLC-AS, 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 AS4373 control?
AS4373 currently announces about 72.7 thousand routed IPv4 addresses.