What this means
The IEEE assigned the MA-L block 189A67 to CSE-Servelec Limited. 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 18:9A:67, it is CSE-Servelec Limited hardware.
Frequently Asked Questions
Who owns MAC prefix 189A67?
189A67 is registered to CSE-Servelec Limited 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. CSE-Servelec Limited's block covers 16,777,216 addresses.
What devices use 189A67?
Any network device with a MAC address starting 18:9A:67 was manufactured by or for CSE-Servelec Limited.