J&R Technology Limited (C8:98:DB:70:00:00 /28)

J&R Technology Limited 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.

PrefixC8:98:DB:70:00:00 /28

Vendor address6A,Building A1,XingYi Industrial Park,Fuyong Town,Bao'an District,Shenzhen Shenzhen Guangdong CN 518103

Block rangeC8:98:DB:70:00:00– C8:98:DB:7F: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

C8:98:DB:70:00:00 C8:98:DB:77:FF:FF C8:98:DB:7F:FF:FF