macadress

Objective Interface Systems, Inc.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:23:44:00:00:00 /24
Vendor address220 Spring Street, Suite 530 Herndon VA US 20170-6201
Country🇺🇸  United States
RegisteredOct 8, 2008
Block range00:23:44:00:00:00– 00:23:44: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. Oct 8, 2008 – Mar 29, 2013 Objective Interface Systems name changedaddress changed
  2. Mar 29, 2013 – present Objective Interface Systems, Inc.

Example addresses in this block

00:23:44:00:00:00 00:23:44:7F:FF:FF 00:23:44:FF:FF:FF

Where this block sits

Previous 00:23:43:00:00:00 /24 TEM AG Next 00:23:45:00:00:00 /24 Sony Corporation

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

Objective Interface Systems, Inc. holds 1 registered blocks in the IEEE registry, ranking #21,824 of 33,427 organizations by block count.