macadress

DRS Test and Energy Management or DRS-TEM

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:05:99:00:00:00 /24
Vendor address110 Wynn Drive Huntsville AL US 35805
Country🇺🇸  United States
RegisteredJun 4, 2001
Block range00:05:99:00:00:00– 00:05:99: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 – Feb 12, 2004 PEI Electronics, Inc. name changed
  2. Feb 12, 2004 – present DRS Test and Energy Management or DRS-TEM

Example addresses in this block

00:05:99:00:00:00 00:05:99:7F:FF:FF 00:05:99:FF:FF:FF

Where this block sits

Previous 00:05:98:00:00:00 /24 CRONOS S.r.l. Next 00:05:9A:00:00:00 /24 Cisco Systems, Inc

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

DRS Test and Energy Management or DRS-TEM holds 1 registered blocks in the IEEE registry, ranking #10,810 of 33,421 organizations by block count.