macadress

CHENGDU INTERLINK SCIENCE AND 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.
Prefix04:D1:6E:80:00:00 /28
Vendor addressRoom 1305, 12A Level, Wanke Huamao Building Sichuan Chengdu CN 610051
Country🇨🇳  China
RegisteredAug 2, 2019
Block range04:D1:6E:80:00:00– 04:D1:6E:8F: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

04:D1:6E:80:00:00 04:D1:6E:87:FF:FF 04:D1:6E:8F:FF:FF

Where this block sits

Previous 04:D1:6E:70:00:00 /28 Envision Energy Next 04:D1:6E:90:00:00 /28 FUZHOU ZHUOYI ELECTRONIC CO.,LTD

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

CHENGDU INTERLINK SCIENCE AND TECHNOLOGY CO.,LTD holds 1 registered blocks in the IEEE registry, ranking #8,252 of 33,427 organizations by block count.