macadress

I-O DATA, INC.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:A0:B0:00:00:00 /24
Vendor address24-1, SAKURADA-MACHI KANAZAWA, ISHIKAWA 920 JP na
Country🇯🇵  Japan
RegisteredApr 22, 1998
Block range00:A0:B0:00:00:00– 00:A0:B0: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. Apr 22, 1998 – Jan 17, 2019 I-O DATA DEVICE, INC. name changedaddress changed
  2. Jan 17, 2019 – Jul 2, 2026 I-O DATA DEVICE,INC. name changed
  3. Jul 2, 2026 – present I-O DATA, INC.

Example addresses in this block

00:A0:B0:00:00:00 00:A0:B0:7F:FF:FF 00:A0:B0:FF:FF:FF

Where this block sits

Previous 00:A0:AF:00:00:00 /24 WMS INDUSTRIES Next 00:A0:B1:00:00:00 /24 FIRST VIRTUAL CORPORATION

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

I-O DATA, INC. holds 3 registered blocks in the IEEE registry, ranking #1,102 of 33,427 organizations by block count.

Other blocks registered to I-O DATA, INC.

34:76:C5:00:00:00 /24 MA-L 50:41:B9:00:00:00 /24 MA-L