Z.U.K. Elzab S.A. (78:07:38:00:00:00 /24)

Z.U.K. Elzab S.A. MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix78:07:38:00:00:00 /24

Vendor addressul. Kruczkowskiego 39 Zabrze PL 41-813

Block range78:07:38:00:00:00– 78:07:38: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 →

Example addresses in this block

78:07:38:00:00:00 78:07:38:7F:FF:FF 78:07:38:FF:FF:FF