Union Source Technology(HK)LTD (F4:70:0C:30:00:00 /28)

Union Source Technology(HK)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.

PrefixF4:70:0C:30:00:00 /28

Vendor addressFLAT/RM 1405B 14/F THE BELGIAN BANK BUILDING NOS.721-725 NATHAN ROAD MONGKOK Hong Kong HK 999077

Block rangeF4:70:0C:30:00:00– F4:70:0C:3F: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

F4:70:0C:30:00:00 F4:70:0C:37:FF:FF F4:70:0C:3F:FF:FF