MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixB0:E3:9D:00:00:00 /24
Vendor address3-147-27 Higasi-sinmachi Hirohata-ku Himeji Hyogo JP 671-1121
Country🇯🇵 Japan
RegisteredFeb 26, 2010
Block rangeB0:E3:9D:00:00:00– B0:E3:9D:FF:FF:FF
Address capacity16,777,216
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
Where this block sits
CAT SYSTEM CO.,LTD. holds 1 registered blocks in the IEEE registry, ranking #7,908 of 33,427 organizations by block count.