Nanjing Qinheng Microelectronics Co., Ltd.

19 blocks

Every MAC/OUI block IEEE has registered to this exact organization name, combined.

Registered nameNanjing Qinheng Microelectronics Co., Ltd.

Total assignments19

Total address capacity318,767,104

First tracked hereAug 22, 2026

Last changed hereOct 7, 2026

SourceIEEE Registration Authority

Vendor registration identifies the organization holding a block, not a specific device model, product line, or manufacturing date. This page combines every block IEEE has registered under this exact organization name; it doesn't mean every address in every listed block is currently shipping in a real device.

About Nanjing Qinheng Microelectronics Co., Ltd.

Nanjing Qinheng (WCH) makes the CH340 USB-to-serial chips and low-cost microcontrollers.

Devices that use these prefixes

USB, Ethernet and Wi-Fi chips inside other products

Assignments by type

Type	Count
MA-L	19

Countries in IEEE's registration records

Country	Blocks
🇨🇳 China	19

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19 registered prefixes

Prefix Type

0C:3D:5E:00:00:00 /24 MA-L 10:A7:1A:00:00:00 /24 MA-L 18:F0:55:00:00:00 /24 MA-L 2C:37:FB:00:00:00 /24 MA-L 3C:AB:72:00:00:00 /24 MA-L 50:54:7B:00:00:00 /24 MA-L 50:F8:AD:00:00:00 /24 MA-L 54:14:A7:00:00:00 /24 MA-L 54:6C:50:00:00:00 /24 MA-L 5C:53:10:00:00:00 /24 MA-L 70:19:88:00:00:00 /24 MA-L 9C:7F:64:00:00:00 /24 MA-L C8:17:F5:00:00:00 /24 MA-L D0:0C:5E:00:00:00 /24 MA-L DC:04:5A:00:00:00 /24 MA-L DC:32:62:00:00:00 /24 MA-L E0:4E:7A:00:00:00 /24 MA-L E4:66:E5:00:00:00 /24 MA-L F4:03:93:00:00:00 /24 MA-L