MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix50:0B:91:70:00:00 /28
Vendor addressNo 57, Baoli Road, Buji Town Longgang District Shenzhen, Guangdong CN 518112
Country🇨🇳 China
RegisteredAug 28, 2016
Block range50:0B:91:70:00:00– 50:0B:91:7F: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
Previous
50:0B:91:60:00:00 /28
Security Alarms & Co. S.A.
Next
50:0B:91:80:00:00 /28
Panasonic Enterprise Solutions Company
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen Xinfa Electronic Co.,ltd holds 3 registered blocks in the IEEE registry, ranking #1,303 of 33,427 organizations by block count.
Other blocks registered to Shenzhen Xinfa Electronic Co.,ltd