Changsha SinoCare, Inc
MA-M
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:A4:D0:A0:00:00 /28
Vendor addressNo.265 Gu yuan road Hi-Tech Zone, Yuelu district Changsha Hunan CN 410205
Country🇨🇳 China
Block range50:A4:D0:A0:00:00– 50:A4:D0:AF: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