MAC address A4:97:5C: manufacturer VTech Telecommunications Ltd.
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Testar grátis 14 dias →The MAC address A4:97:5C (or A4975C, without separators) identifies a device made by VTech Telecommunications Ltd.. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with A4:97:5C?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix A4:97:5C is registered to VTech Telecommunications Ltd.. Any device whose MAC starts with A4:97:5C (for example, A4:97:5C: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 VTech Telecommunications Ltd. MAC you don't recognize could be a legitimate device (a phone, a TV, a camera) — or one that shouldn't be there. VTech Telecommunications Ltd. has 4 MAC prefixes registered with the IEEE (see others under "Read also").
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 A4:97:5C?
The prefix A4:97:5C (A4975C) is registered with the IEEE to VTech Telecommunications Ltd..
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 A4:97:5C MAC from VTech Telecommunications Ltd.?
Yes. Any MAC starting with A4:97:5C was assigned to VTech Telecommunications Ltd. by the IEEE, though the final product may be sold under another brand.