AS5653: the UCSF network
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Testar grátis 14 dias →AS5653 is an internet Autonomous System operated by UCSF (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 AS5653?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS5653 was assigned to UCSF by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS5653 currently announces 15 IPv4 block(s), totaling about 196.2 thousand addresses (196,242 in all), registered in the United States. Services from UCSF are reached through these addresses.
What it means to see AS5653 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS5653. That means the other end sits on the UCSF 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 AS5653?
AS5653 is assigned to UCSF, 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 AS5653 control?
AS5653 currently announces about 196.2 thousand routed IPv4 addresses.