MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix78:D4:F1:50:00:00 /28
Vendor addressBuilding 1,No.399, Keyuan Road, Pudong, Shanghai China Shanghai CN 200120
Country🇨🇳 China
RegisteredNov 10, 2020
Block range78:D4:F1:50:00:00– 78:D4:F1:5F: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
78:D4:F1:40:00:00 /28
BYD Auto lndustry Co.,Ltd
Next
78:D4:F1:60:00:00 /28
Guangzhou Kingray information technology Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Huaqin Telecom Technology Co.,Ltd. holds 5 registered blocks in the IEEE registry, ranking #588 of 33,427 organizations by block count.
Other blocks registered to Huaqin Telecom Technology Co.,Ltd.