MAC address 00:05:21: manufacturer Schneider Electric
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Testar grátis 14 dias →The MAC address 00:05:21 (or 000521, without separators) identifies a device made by Schneider Electric. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with 00:05:21?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix 00:05:21 is registered to Schneider Electric. Any device whose MAC starts with 00:05:21 (for example, 00:05:21:1A: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 Schneider Electric MAC you don't recognize could be a legitimate device (a phone, a TV, a camera) — or one that shouldn't be there. Schneider Electric has 7 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 00:05:21?
The prefix 00:05:21 (000521) is registered with the IEEE to Schneider Electric.
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 00:05:21 MAC from Schneider Electric?
Yes. Any MAC starting with 00:05:21 was assigned to Schneider Electric by the IEEE, though the final product may be sold under another brand.