AS239: the UTORONTO-AS network
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Testar grátis 14 dias →AS239 is an internet Autonomous System operated by UTORONTO-AS (Canada). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS239?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS239 was assigned to UTORONTO-AS by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS239 currently announces 8 IPv4 block(s), totaling about 331.3 thousand addresses (331,264 in all), registered in Canada. Services from UTORONTO-AS are reached through these addresses.
What it means to see AS239 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS239. That means the other end sits on the UTORONTO-AS network (Canada). 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 AS239?
AS239 is assigned to UTORONTO-AS, registered in Canada.
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 AS239 control?
AS239 currently announces about 331.3 thousand routed IPv4 addresses.