MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix88:3C:C5:80:00:00 /28
Vendor addressOptics Valley High tech building, No. 2, Jiayuan Road, Hongshan District, Wuhan Wuhan HuBei CN 430074
Country🇨🇳 China
RegisteredJun 3, 2022
Block range88:3C:C5:80:00:00– 88:3C:C5:8F: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
Where this block sits
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88:3C:C5:70:00:00 /28
KMtronic ltd
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88:3C:C5:90:00:00 /28
SERNET (SUZHOU) TECHNOLOGIES CORPORATION
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Wuhan Guangying Intelligence Technology Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #32,506 of 33,427 organizations by block count.