MAC address 9C:A3:A9: manufacturer Guangzhou Juan Optical and Electronical Tech Joint Stock Co., Ltd
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Testar grátis 14 dias →The MAC address 9C:A3:A9 (or 9CA3A9, without separators) identifies a device made by Guangzhou Juan Optical and Electronical Tech Joint Stock Co., Ltd. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with 9C:A3:A9?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix 9C:A3:A9 is registered to Guangzhou Juan Optical and Electronical Tech Joint Stock Co., Ltd. Any device whose MAC starts with 9C:A3:A9 (for example, 9C:A3:A9:1A: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 Guangzhou Juan Optical and Electronical Tech Joint Stock Co., Ltd 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 9C:A3:A9?
The prefix 9C:A3:A9 (9CA3A9) is registered with the IEEE to Guangzhou Juan Optical and Electronical Tech Joint Stock Co., 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 9C:A3:A9 MAC from Guangzhou Juan Optical and Electronical Tech Joint Stock Co., Ltd?
Yes. Any MAC starting with 9C:A3:A9 was assigned to Guangzhou Juan Optical and Electronical Tech Joint Stock Co., Ltd by the IEEE, though the final product may be sold under another brand.