Beijing Guangshu Zhiying Technology Development 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.

PrefixD0:15:BB:20:00:00 /28

Vendor addressRoom910,Environment Building,16 Guangqumen Inner Street,Dongcheng District Beijing CN 100062

RegisteredMay 18, 2023

Block rangeD0:15:BB:20:00:00– D0:15:BB: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 →

Example addresses in this block

D0:15:BB:20:00:00 D0:15:BB:27:FF:FF D0:15:BB:2F:FF:FF

Where this block sits

Previous D0:15:BB:10:00:00 /28 Jiangsu Eastone Technology Co.,Ltd Next D0:15:BB:30:00:00 /28 TePS'EG

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

Beijing Guangshu Zhiying Technology Development Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #6,563 of 33,427 organizations by block count.