MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD4:A0:FB:90:00:00 /28
Vendor address銅鑼灣 伊榮街9號欣榮商業大廈 16 樓 1602 室 HONGKONG HK 1
Country🇭🇰 Hong Kong
RegisteredMay 31, 2025
Block rangeD4:A0:FB:90:00:00– D4:A0:FB: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
Previous
D4:A0:FB:80:00:00 /28
Parpro System Corporation
Next
D4:A0:FB:A0:00:00 /28
IMPULSE CCTV NETWORKS INDIA PVT. LTD.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Hangteng (HK) Technology Co., Limited holds 2 registered blocks in the IEEE registry, ranking #2,149 of 33,421 organizations by block count.
Other blocks registered to Hangteng (HK) Technology Co., Limited