macadress

Intellio Ltd

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:19:B4:00:00:00 /24
Vendor addressGyarmat u. 99/B Budapest HU 1147
Country🇭🇺  Hungary
RegisteredSep 25, 2006
Block range00:19:B4:00:00:00– 00:19:B4: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. Sep 25, 2006 – Nov 6, 2014 VideoCast Ltd. name changed
  2. Nov 6, 2014 – present Intellio Ltd

Example addresses in this block

00:19:B4:00:00:00 00:19:B4:7F:FF:FF 00:19:B4:FF:FF:FF

Where this block sits

Previous 00:19:B3:00:00:00 /24 Stanford Research Systems Next 00:19:B5:00:00:00 /24 Famar Fueguina S.A.

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

Intellio Ltd holds 1 registered blocks in the IEEE registry, ranking #16,348 of 33,421 organizations by block count.