LONGI METER CO.,LTD.
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.
Prefix80:1D:0D:50:00:00 /28
Vendor addressNo. 25 Guangming Road, Yinchuan (National Level) Economic and Technological Development Zone Yinchuan Ningxia CN 750021
Country🇨🇳 China
Block range80:1D:0D:50:00:00– 80:1D:0D: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