MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixEC:A7:B1:90:00:00 /28
Vendor addressWorkshop 60,3/F, Block A,East Sun Industrial Centre, No. 16 Shing Yip Street, Kwun Tong, Kowloon Hong Kong HK 999077
CountryðŸ‡ðŸ‡° Hong Kong
RegisteredAug 3, 2024
Block rangeEC:A7:B1:90:00:00– EC:A7:B1:9F: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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EC:A7:B1:80:00:00 /28
Shenzhen zhst video technology co.,ltd
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EC:A7:B1:A0:00:00 /28
Annapurna labs
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Print International Limited holds 1 registered blocks in the IEEE registry, ranking #23,447 of 33,427 organizations by block count.