What this means
The IEEE assigned the MA-L block 583879 to RICOH COMPANY, LTD.. 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 58:38:79, it is RICOH COMPANY, LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 583879?
583879 is registered to RICOH COMPANY, LTD. 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. RICOH COMPANY, LTD.'s block covers 16,777,216 addresses.
What devices use 583879?
Any network device with a MAC address starting 58:38:79 was manufactured by or for RICOH COMPANY, LTD..