macadress

TKH Security Solutions USA

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:06:73:00:00:00 /24
Vendor address12920 Cloverleaf Center Drive Germantown MD US 20874
Country🇺🇸  United States
RegisteredJun 4, 2001
Block range00:06:73:00:00:00– 00:06:73: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 – Nov 4, 2005 Optelecom, Inc. name changedaddress changed
  2. Nov 4, 2005 – May 26, 2011 Optelecom-nkf name changed
  3. May 26, 2011 – present TKH Security Solutions USA

Example addresses in this block

00:06:73:00:00:00 00:06:73:7F:FF:FF 00:06:73:FF:FF:FF

Where this block sits

Previous 00:06:72:00:00:00 /24 Netezza Next 00:06:74:00:00:00 /24 Spectrum Control, Inc.

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

TKH Security Solutions USA holds 1 registered blocks in the IEEE registry, ranking #30,157 of 33,427 organizations by block count.