What this means
The IEEE assigned the MA-L block 001858 to TagMaster AB. 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 00:18:58, it is TagMaster AB hardware.
Frequently Asked Questions
Who owns MAC prefix 001858?
001858 is registered to TagMaster AB 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. TagMaster AB's block covers 16,777,216 addresses.
What devices use 001858?
Any network device with a MAC address starting 00:18:58 was manufactured by or for TagMaster AB.