SHENZHEN ZHONGXI SECURITY 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.
PrefixD0:22:12:D0:00:00 /28
Vendor address2F,East 420Building,Bagua 3rd, Futian, Shenzhen shenzhen guangdong CN ZIP
Country🇨🇳 China
Block rangeD0:22:12:D0:00:00– D0:22:12:DF: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