What this means
The IEEE assigned the MA-L block A0218B to ACE Antenna Co., 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 A0:21:8B, it is ACE Antenna Co., ltd hardware.
Frequently Asked Questions
Who owns MAC prefix A0218B?
A0218B is registered to ACE Antenna Co., 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. ACE Antenna Co., ltd's block covers 16,777,216 addresses.
What devices use A0218B?
Any network device with a MAC address starting A0:21:8B was manufactured by or for ACE Antenna Co., ltd.