Hunan Shengyun Photoelectric Technology Co., Ltd.

Unique prefixes: 3

Block Size: 1056765 (1.05 M)

First registration: 13 July 2019

Last updated: 10 March 2023

Types

MA-M: Mac Address Block Medium. Number of address 2^20 (~1 Million)

MA-S: Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)

MAC Prefix Type Registration Date
70:B3:D5:7C:A MA-S 2019-07-13
7C:45:F9:1 MA-M 2022-11-28
8C:1F:64:02:9 MA-S 2023-03-10