MAC address 00:04:87: manufacturer Cogency Semiconductor, Inc.
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Testar grátis 14 dias →The MAC address 00:04:87 (or 000487, without separators) identifies a device made by Cogency Semiconductor, Inc.. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with 00:04:87?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix 00:04:87 is registered to Cogency Semiconductor, Inc.. Any device whose MAC starts with 00:04:87 (for example, 00:04:87:1A: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 Cogency 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.
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 00:04:87?
The prefix 00:04:87 (000487) is registered with the IEEE to Cogency 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 00:04:87 MAC from Cogency Semiconductor, Inc.?
Yes. Any MAC starting with 00:04:87 was assigned to Cogency Semiconductor, Inc. by the IEEE, though the final product may be sold under another brand.