MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix18:74:E2:70:00:00 /28
Vendor addressBejing Chaoyang District Guangshun North Street Hostpital No.16 No.2 building 14 room 1406 Bejing Bejing CN 100102
Country🇨🇳 China
RegisteredMar 31, 2021
Block range18:74:E2:70:00:00– 18:74:E2:7F: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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18:74:E2:60:00:00 /28
Beijing Jrunion Technology Co., Ltd.
Next
18:74:E2:80:00:00 /28
Kano Computing Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Sansec Technology Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #25,167 of 33,427 organizations by block count.