What this means
The IEEE assigned the MA-L block 00903D to BIOPAC SYSTEMS, INC.. 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 00:90:3D, it is BIOPAC SYSTEMS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 00903D?
00903D is registered to BIOPAC SYSTEMS, INC. in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. BIOPAC SYSTEMS, INC.'s block covers 16,777,216 addresses.
What devices use 00903D?
Any network device with a MAC address starting 00:90:3D was manufactured by or for BIOPAC SYSTEMS, INC..