MAC address 28:A3:31: manufacturer Sierra Wireless, ULC
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Testar grátis 14 dias →The MAC address 28:A3:31 (or 28A331, without separators) identifies a device made by Sierra Wireless, ULC. Here is what that means and how to recognize devices on your network.
Who owns the MAC starting with 28:A3:31?
The first three blocks of a MAC address form the OUI (Organizationally Unique Identifier), a code the IEEE assigns to each manufacturer. The prefix 28:A3:31 is registered to Sierra Wireless, ULC. Any device whose MAC starts with 28:A3:31 (for example, 28:A3:31:1A: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 Sierra Wireless, ULC MAC you don't recognize could be a legitimate device (a phone, a TV, a camera) — or one that shouldn't be there. Sierra Wireless, ULC has 6 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 28:A3:31?
The prefix 28:A3:31 (28A331) is registered with the IEEE to Sierra Wireless, ULC.
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 28:A3:31 MAC from Sierra Wireless, ULC?
Yes. Any MAC starting with 28:A3:31 was assigned to Sierra Wireless, ULC by the IEEE, though the final product may be sold under another brand.