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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.
Prefix18:66:96:80:00:00 /28
Vendor address15F,New Bund Oriental Plaza 1,No.512, Haiyang West Road, Pudong New Area, Shanghai Shanghai CN 200120
Country🇨🇳 China
Block range18:66:96:80:00:00– 18:66:96:8F: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