Chengdu Ba SAN SI YI Information Technology 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.
PrefixD4:BA:BA:80:00:00 /28
Vendor address(Xihanggang Science and Technology Enterprise Incubation Center),No. 2, Section 4, Xihanggang Avenue, Industrial Concentration Area, Southwest Airport Economic Development Zone, Shuangliu District, Chengdu City, China (Sichuan) Pilot Free Trade Zone Chengdu CN 250100
Country🇨🇳 China
Block rangeD4:BA:BA:80:00:00– D4:BA:BA:8F: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