MAC address F4:03:21: manufacturer BeNeXt B.V.
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Testar grátis 14 dias →The MAC address F4:03:21 (or F40321, without separators) identifies a device made by BeNeXt B.V.. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with F4:03:21?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix F4:03:21 is registered to BeNeXt B.V.. Any device whose MAC starts with F4:03:21 (for example, F4:03:21:1A:2B:3C) was made by this company.
What it means to see this device on your network
Knowing the manufacturer helps identify what is connected to your Wi-Fi or company network. A BeNeXt B.V. MAC you don't recognize could be a legitimate device (a phone, a TV, a camera) — or one that shouldn't be there.
How to see every device and vendor on your network
Looking up one MAC vendor at a time is tedious. Sentinela, by PC Monitor, automatically maps every device on your network, shows each one's vendor by MAC and flags suspicious devices and connections — running on your Windows. Meet Sentinela.
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Perguntas frequentes
Who owns MAC address F4:03:21?
The prefix F4:03:21 (F40321) is registered with the IEEE to BeNeXt B.V..
What is the OUI of a MAC address?
It is the first three blocks of the MAC (6 hex digits), which the IEEE assigns to each manufacturer.
Is every F4:03:21 MAC from BeNeXt B.V.?
Yes. Any MAC starting with F4:03:21 was assigned to BeNeXt B.V. by the IEEE, though the final product may be sold under another brand.