Harmonic Technology 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.

Prefix18:45:B3:60:00:00 /28

Vendor addressBuilding B, No. 8 Tianxin Street, Yongkou Management District, Management District, Shijie Town Dongguan Guangdong CN 523290

Country🇨🇳 China

RegisteredSep 30, 2021

Block range18:45:B3:60:00:00– 18:45:B3:6F: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

18:45:B3:60:00:00 18:45:B3:67:FF:FF 18:45:B3:6F:FF:FF

Where this block sits

Previous 18:45:B3:50:00:00 /28 ELPITECH LLC Next 18:45:B3:70:00:00 /28 Shenzhen Incar Technology Co., Ltd.

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

Harmonic Technology Limited holds 1 registered blocks in the IEEE registry, ranking #14,573 of 33,427 organizations by block count.