Weihai Idencoder Electronic Technology Co.,Ltd

MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

Prefix7C:E4:A1:40:00:00 /28

Vendor addressTEL：1# Building, 12-5# FENGCHAO STREET, ECONOMIC DEVELOPMENT ZONE, WEIHAI CITY, SHANDONG PROVINCE Weihai Shandong CN 264200

Country🇨🇳 China

RegisteredJul 24, 2026

Block range7C:E4:A1:40:00:00– 7C:E4:A1:4F:FF:FF

Address capacity1,048,576

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Example addresses in this block

7C:E4:A1:40:00:00 7C:E4:A1:47:FF:FF 7C:E4:A1:4F:FF:FF

Where this block sits

Previous 7C:E4:A1:30:00:00 /28 Vybe Audio LLC Next 7C:E4:A1:50:00:00 /28 HI Tecnologia Industria e Comercio Ltda

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Weihai Idencoder Electronic Technology Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #32,042 of 33,427 organizations by block count.