Shenzhen Guanxin Information Technology Co.,Ltd MA-S
MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:50:D0:00 /36
Vendor addressFloor 3F, building 1th, Baisha Science  Technology Park , Shahe West Road, Nanshan Shenzhen China Shenzhen Guangdong CN 517055
Block range8C:1F:64:50:D0:00– 8C:1F:64:50:DF:FF
Address capacity4,096
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