macadress

A&D Co., Ltd.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:09:1F:00:00:00 /24
Vendor address1-243 Asahi Kitamoto-shi Saitama JP 364-8585
Country🇯🇵  Japan
RegisteredJan 30, 2002
Block range00:09:1F:00:00:00– 00:09:1F: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 →

Ownership timeline

  1. Jan 30, 2002 – Jan 30, 2013 A&D Co., Ltd. name changed
  2. Jan 30, 2013 – Jan 31, 2013 A&D Co., Ltd. name changed
  3. Jan 31, 2013 – Feb 14, 2013 A&D Co., Ltd. name changed
  4. Feb 14, 2013 – present A&D Co., Ltd.

Example addresses in this block

00:09:1F:00:00:00 00:09:1F:7F:FF:FF 00:09:1F:FF:FF:FF

Where this block sits

Previous 00:09:1E:00:00:00 /24 Firstech Technology Corp. Next 00:09:20:00:00:00 /24 EpoX COMPUTER CO.,LTD.

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

A&D Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #3,640 of 33,421 organizations by block count.