ASR Co,.Ltd. (BC:D9:40:00:00:00 /24)

ASR Co,.Ltd. MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

PrefixBC:D9:40:00:00:00 /24

Vendor address1-3-1 Sotokanda Chiyoda-ku Tokyo JP 101-0021

Block rangeBC:D9:40:00:00:00– BC:D9:40: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

BC:D9:40:00:00:00 BC:D9:40:7F:FF:FF BC:D9:40:FF:FF:FF