macadress

Charmlink Tech(HK) Co.,Limited

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.
Prefix8C:19:2D:40:00:00 /28
Vendor addressUNIT 04,7/F BRIGHT WAY TOWER NO.33 MONG KOK RD KL HONGKONG HK 999077
Country🇭🇰  Hong Kong
RegisteredApr 10, 2016
Block range8C:19:2D:40:00:00– 8C:19:2D: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

8C:19:2D:40:00:00 8C:19:2D:47:FF:FF 8C:19:2D:4F:FF:FF

Where this block sits

Previous 8C:19:2D:30:00:00 /28 Greenfield Technology Next 8C:19:2D:50:00:00 /28 ELCO(TIANJIN)ELECTRONICS CO.,LTD.

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

Charmlink Tech(HK) Co.,Limited holds 1 registered blocks in the IEEE registry, ranking #8,195 of 33,421 organizations by block count.