Who owns MAC prefix 28A331?

28A331 is registered to Sierra Wireless, ULC in the IEEE MA-L registry.

What devices use 28A331?

Any network device with a MAC address starting 28:A3:31 was manufactured by or for Sierra Wireless, ULC.

MA-L · OUI prefix

Sierra Wireless, ULC

Any MAC address starting 28:A3:31 is registered to Sierra Wireless, ULC.

OUI prefix	28A331
Vendor	Sierra Wireless, ULC
Registry	MA-L (24-bit, large block)
Example MAC	28:A3:31:00:00:00

What this means

The IEEE assigned the MA-L block 28A331 to Sierra Wireless, ULC. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 28:A3:31, it is Sierra Wireless, ULC hardware.

Other Sierra Wireless, ULC prefixes

Sierra Wireless, ULC holds 6 registered blocks in total.

00A0D5 50139D 64CE6E 84DB2F CC934A

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