MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix4C:65:A8:C0:00:00 /28
Vendor address1425 E St. San Diego US 92110
Country🇺🇸 United States
RegisteredMar 26, 2017
Block range4C:65:A8:C0:00:00– 4C:65:A8: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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4C:65:A8:B0:00:00 /28
ZMIN Technologies
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4C:65:A8:D0:00:00 /28
Qingping Technology (Beijing) Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Fuse holds 1 registered blocks in the IEEE registry, ranking #13,197 of 33,427 organizations by block count.