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:A5:9C:C0:00:00 /28
Vendor address7F-3, No.200, Sec. 4, Wenxin Rd., Taichung City Taiwan TW 40462
Country🇹🇼 Taiwan
RegisteredFeb 18, 2022
Block range18:A5:9C:C0:00:00– 18:A5:9C:CF: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
Where this block sits
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CAL-COMP INDUSTRIA E COMERCIO DE ELETRONICOS E INFORMATICA LTDA
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Annapurna labs
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
BlueEyes Technology holds 1 registered blocks in the IEEE registry, ranking #7,154 of 33,421 organizations by block count.