MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:06:B5:00:00:00 /24
Vendor address20550 Nordhoff St. Chatsworth CA US 91311
RegisteredJun 4, 2001
Block range00:06:B5:00:00:00– 00:06:B5: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. Jun 4, 2001 – Oct 28, 2011 Luminent, Inc. name changed
  2. Oct 28, 2011 – present Source Photonics, 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.

Source Photonics, Inc. holds 2 registered blocks in the IEEE registry, ranking #3,122 of 33,427 organizations by block count.

Other blocks registered to Source Photonics, Inc.