SERNET (SUZHOU) TECHNOLOGIES CORPORATION

SERNET (SUZHOU) TECHNOLOGIES CORPORATION , manages 26 unique MAC address prefixes. These prefixes are part of a massive allocation with a total block size of 247.5 million addresses.

The allocation includes the following types: MA-L (Mac Address Block Large, ~16 million addresses each), and MA-M (Mac Address Block Medium, ~1 Million addresses each).

The company registered its MAC address allocation on 10 March 2021, and the most recent update was made on 12 September 2025. These allocations support network identification and communication globally.

Unique prefixes: 26

Block Size: 247463910 (247.46 M)

First registration: 10 March 2021

Last updated: 12 September 2025

Types

MA-L:Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

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

MAC PrefixTypeRegistration Date
04:71:53 MA-L2021-03-10
04:C9:8B:0 MA-M2025-03-28
0C:67:14 MA-L2023-03-29
38:1F:26:1 MA-M2022-01-29
48:3E:5E MA-L2021-09-04
48:5E:0E:6 MA-M2024-07-22
50:A0:30:D MA-M2021-10-28
58:48:49:4 MA-M2021-06-02
58:76:AC MA-L2022-01-11
74:06:35 MA-L2023-10-19
78:B3:9F MA-L2024-12-18
7C:13:1D MA-L2021-12-09
7C:83:34:9 MA-M2021-07-23
88:3C:C5:9 MA-M2022-06-07
8C:51:09:A MA-M2022-04-09
8C:55:70:B MA-M2023-11-03
98:2C:C6 MA-L2025-09-12
A0:95:7F MA-L2022-06-25
B4:4D:43:7 MA-M2023-03-04
C0:9F:51 MA-L2022-03-25
C4:0F:A6 MA-L2024-06-14
C4:A5:59:E MA-M2022-10-28
D0:96:86:0 MA-M2022-08-06
D0:B6:6F MA-L2021-05-12
D8:21:DA MA-L2023-03-10
F4:23:9C MA-L2021-06-26