macadress

Ultra Electronics Command & Control Systems

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:90:58:00:00:00 /24
Vendor addressKnaves Beech Business Centre Hemel Hemstead Herts England GB HP2 7BW
Country🇬🇧  United Kingdom
RegisteredApr 22, 1998
Block range00:90:58:00:00:00– 00:90:58: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. Apr 22, 1998 – Jun 5, 2002 ULTRA ELECTRONICS LTD. name changedaddress changed
  2. Jun 5, 2002 – Apr 27, 2016 Ultra Electronics Ltd., Command and Control Systems name changed
  3. Apr 27, 2016 – Sep 23, 2016 Ultra Electronics Limited (AEP Networks) name changedaddress changed
  4. Sep 23, 2016 – present Ultra Electronics Command & Control Systems

Example addresses in this block

00:90:58:00:00:00 00:90:58:7F:FF:FF 00:90:58:FF:FF:FF

Where this block sits

Previous 00:90:57:00:00:00 /24 AANetcom, Inc. Next 00:90:59:00:00:00 /24 TELECOM DEVICE K.K.

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

Ultra Electronics Command & Control Systems holds 2 registered blocks in the IEEE registry, ranking #3,319 of 33,427 organizations by block count.

Other blocks registered to Ultra Electronics Command & Control Systems

00:E0:6C:00:00:00 /24 MA-L