What this means
The IEEE assigned the MA-L block 788B77 to Standar Telecom. 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 78:8B:77, it is Standar Telecom hardware.
Frequently Asked Questions
Who owns MAC prefix 788B77?
788B77 is registered to Standar Telecom 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. Standar Telecom's block covers 16,777,216 addresses.
What devices use 788B77?
Any network device with a MAC address starting 78:8B:77 was manufactured by or for Standar Telecom.