MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix90:88:A9:90:00:00 /28
Vendor address1st Floor, Building A2, China Wireless Valley, No. 9 Mozhou East Road, Jiangning District Nanjing Jiangsu CN 211100
Country🇨🇳 China
RegisteredNov 27, 2024
Block range90:88:A9:90:00:00– 90:88:A9:9F: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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90:88:A9:80:00:00 /28
Samway Electronic SRL
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90:88:A9:A0:00:00 /28
Yi Tunnel(beijing) Technology Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Nanjing Boswell Industrial Communication Technology Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #20,573 of 33,427 organizations by block count.