AS397545: the AS-NSL-261 network
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Testar grátis 14 dias →AS397545 is an internet Autonomous System operated by AS-NSL-261 (Canada). Here is what that means and why this number may show up when you investigate a connection on your network.
What is AS397545?
An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS397545 was assigned to AS-NSL-261 by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.
Reach on the internet
AS397545 currently announces 15 IPv4 block(s), totaling about 61.4 thousand addresses (61,440 in all), registered in Canada. Services from AS-NSL-261 are reached through these addresses.
What it means to see AS397545 on your network
When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS397545. That means the other end sits on the AS-NSL-261 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 AS397545?
AS397545 is assigned to AS-NSL-261, 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 AS397545 control?
AS397545 currently announces about 61.4 thousand routed IPv4 addresses.