AS399826: the WEBIFFI network

Equipe PC Monitor · Atualizado em 19/09/2026

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AS399826 is an internet Autonomous System operated by WEBIFFI (PR). Here is what that means and why this number may show up when you investigate a connection on your network.

What is AS399826?

An Autonomous System (ASN) is a block of networks under a single control with its own routing policy on the internet. The number AS399826 was assigned to WEBIFFI by an RIR (regional internet registry). All traffic entering or leaving that network is announced under this number.

Reach on the internet

AS399826 currently announces 1 IPv4 block(s), totaling 256 addresses (256 in all), registered in PR. Services from WEBIFFI are reached through these addresses.

What it means to see AS399826 on your network

When you investigate where a connection from your computer or phone comes from (or goes to), you may find AS399826. That means the other end sits on the WEBIFFI network (PR). 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 AS399826?

AS399826 is assigned to WEBIFFI, registered in PR.

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 AS399826 control?

AS399826 currently announces 256 routed IPv4 addresses.

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