MAC address B8:CA:04: manufacturer Holtek Semiconductor Inc.
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Testar grátis 14 dias →The MAC address B8:CA:04 (or B8CA04, without separators) identifies a device made by Holtek Semiconductor Inc.. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with B8:CA:04?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix B8:CA:04 is registered to Holtek Semiconductor Inc.. Any device whose MAC starts with B8:CA:04 (for example, B8:CA:04:1A: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 Holtek Semiconductor Inc. MAC you don't recognize could be a legitimate device (a phone, a TV, a camera) — or one that shouldn't be there. Holtek Semiconductor Inc. has 2 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 B8:CA:04?
The prefix B8:CA:04 (B8CA04) is registered with the IEEE to Holtek Semiconductor Inc..
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 B8:CA:04 MAC from Holtek Semiconductor Inc.?
Yes. Any MAC starting with B8:CA:04 was assigned to Holtek Semiconductor Inc. by the IEEE, though the final product may be sold under another brand.