YAMAKATSU ELECTRONICS INDUSTRY CO., LTD. (70:B3:D5:05:30:00 /36)

YAMAKATSU ELECTRONICS INDUSTRY CO., LTD. MA-S

MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.

Prefix70:B3:D5:05:30:00 /36

Vendor address1-37-23, Suenaga, Takatsu Kawasaki-City Kanagawa JP 213-0013

Block range70:B3:D5:05:30:00– 70:B3:D5:05:3F:FF

Address capacity4,096

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

70:B3:D5:05:30:00 70:B3:D5:05:37:FF 70:B3:D5:05:3F:FF