What this means
The IEEE assigned the MA-L block BCEA2B to CityCom GmbH. 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 BC:EA:2B, it is CityCom GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix BCEA2B?
BCEA2B is registered to CityCom GmbH 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. CityCom GmbH's block covers 16,777,216 addresses.
What devices use BCEA2B?
Any network device with a MAC address starting BC:EA:2B was manufactured by or for CityCom GmbH.