Xiamen Joint Tech. 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.

Prefix5C:AB:22:30:00:00 /28

Vendor addressBuilding #2, No. 9 Yangtai Road, Haicang Distric Xiamen Fujian CN 361000

Block range5C:AB:22:30:00:00– 5C:AB:22:3F: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

5C:AB:22:30:00:00 5C:AB:22:37:FF:FF 5C:AB:22:3F:FF:FF

Where this block sits

Previous 5C:AB:22:20:00:00 /28 Santiam Labs Next 5C:AB:22:40:00:00 /28 Comet Technologies Denmark A/S

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

Xiamen Joint Tech. CO.,Ltd. holds 1 registered blocks in the IEEE registry, ranking #32,766 of 33,498 organizations by block count.