macadress

EHTech (Beijing)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.
Prefix78:78:35:20:00:00 /28
Vendor address2nd Floor, Building 6 (Block D), No.5 Shengfang Road, Daxing District Beijing CN 102627
Country🇨🇳  China
RegisteredJun 30, 2025
Block range78:78:35:20:00:00– 78:78:35:2F: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 →

Ownership timeline

  1. Jun 30, 2025 – Jul 1, 2025 EHTech （Beijing）Co., Ltd. name changed
  2. Jul 1, 2025 – present EHTech (Beijing)Co., Ltd.

Example addresses in this block

78:78:35:20:00:00 78:78:35:27:FF:FF 78:78:35:2F:FF:FF

Where this block sits

Previous 78:78:35:10:00:00 /28 ENQT GmbH Next 78:78:35:30:00:00 /28 SHENZHEN CHUANGWEI ELECTRONIC APPLIANCE TECH CO., LTD.

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

EHTech (Beijing)Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #11,310 of 33,427 organizations by block count.