What this means
The IEEE assigned the MA-L block 001E4B to City Theatrical. 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 00:1E:4B, it is City Theatrical hardware.
Frequently Asked Questions
Who owns MAC prefix 001E4B?
001E4B is registered to City Theatrical 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. City Theatrical's block covers 16,777,216 addresses.
What devices use 001E4B?
Any network device with a MAC address starting 00:1E:4B was manufactured by or for City Theatrical.