What this means
The IEEE assigned the MA-L block 001637 to CITEL SpA. 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 00:16:37, it is CITEL SpA hardware.
Frequently Asked Questions
Who owns MAC prefix 001637?
001637 is registered to CITEL SpA 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. CITEL SpA's block covers 16,777,216 addresses.
What devices use 001637?
Any network device with a MAC address starting 00:16:37 was manufactured by or for CITEL SpA.