Denki Kogyo Company, Limited
MA-S
MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix00:1B:C5:0B:90:00 /36
Vendor address13-4 Satsuki-cho Kanuma-shi Tochigi JP 3220014
Country🇯🇵 Japan
Block range00:1B:C5:0B:90:00– 00:1B:C5:0B:9F: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