Beijing Sutongwang E-Business 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.
Prefix4C:E1:73:00:00:00 /28
Vendor addressRoom 1108, Qingyun modern building. NO.43 Bei San Huan Xi Road Beijing Beijing CN 100086
Country🇨🇳 China
Block range4C:E1:73:00:00:00– 4C:E1:73:0F: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