Shenzhen Smart-core Technology co., Ltd. (38:3A:21:60:00:00 /28)

Shenzhen Smart-core Technology 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.

Prefix38:3A:21:60:00:00 /28

Vendor address16/F., Finance & Technology Building, No. 11 Keyuan Road, Nanshan Dist. Shenzhen Guangdong CN 518057

Block range38:3A:21:60:00:00– 38:3A:21:6F: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

38:3A:21:60:00:00 38:3A:21:67:FF:FF 38:3A:21:6F:FF:FF