macadress

Zero One Technology Co. Ltd.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:40:01:00:00:00 /24
Vendor address10 Fl., No. 8, Lane 360, Sec 1, Neihu Dist., Taipei City TW 114
Country🇹🇼  Taiwan
RegisteredApr 22, 1998
Block range00:40:01:00:00:00– 00:40:01: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 – Nov 11, 2011 ZYXEL COMMUNICATIONS, INC. name changedaddress changed
  2. Nov 11, 2011 – present Zero One Technology Co. Ltd.

Example addresses in this block

00:40:01:00:00:00 00:40:01:7F:FF:FF 00:40:01:FF:FF:FF

Where this block sits

Previous 00:40:00:00:00:00 /24 PCI COMPONENTES DA AMZONIA LTD Next 00:40:02:00:00:00 /24 PERLE SYSTEMS LIMITED

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

Zero One Technology Co. Ltd. holds 1 registered blocks in the IEEE registry, ranking #33,156 of 33,427 organizations by block count.