Shanghai Tianhe Automation Instrumentation Co., Ltd.
MA-S
MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:AF:B0:00 /36
Vendor addressroom 501, block D, No. 100, lane 2891, Qilianshan Nan road, Shanghai Shanghai CN 200331
Country🇨🇳 China
Block range70:B3:D5:AF:B0:00– 70:B3:D5:AF:BF: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