MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:26:EF:00:00:00 /24
Vendor address22355 Tag Way Dulles VA US 20166-9310
RegisteredJul 23, 2009
Block range00:26:EF:00:00:00– 00:26:EF: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. Jul 23, 2009 – Jul 24, 2009 Technology Advancement Group name changedaddress changed
  2. Jul 24, 2009 – present Technology Advancement Group, Inc.

Example addresses in this block

Where this block sits

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

Technology Advancement Group, Inc. holds 1 registered blocks in the IEEE registry, ranking #29,369 of 33,421 organizations by block count.