macadress

GS Yuasa International Ltd.

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.
PrefixD0:9F:D9:30:00:00 /28
Vendor address677 Shimoakasaka-Ohnohara Kawagoe-Shi Saitama JP 350-1155
Country🇯🇵  Japan
RegisteredMar 27, 2021
Block rangeD0:9F:D9:30:00:00– D0:9F:D9:3F: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 →

Ownership timeline

  1. Mar 27, 2021 – May 20, 2021 Sanken-Densetsu Co.,LTD. name changed
  2. May 20, 2021 – Apr 14, 2023 GS Yuasa Infrastructure Systems Co.,Ltd. name changed
  3. Apr 14, 2023 – present GS Yuasa International Ltd.

Example addresses in this block

D0:9F:D9:30:00:00 D0:9F:D9:37:FF:FF D0:9F:D9:3F:FF:FF

Where this block sits

Previous D0:9F:D9:20:00:00 /28 Westar Display Technologies Next D0:9F:D9:40:00:00 /28 Poten (Shanghai) Technology Co.,Ltd.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

GS Yuasa International Ltd. holds 1 registered blocks in the IEEE registry, ranking #14,034 of 33,427 organizations by block count.