IRLINK

MA-L

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

Prefix00:19:1A:00:00:00 /24

Vendor addressHanYoung B/D 6F, 4-6 SEOUL KR 138-824

RegisteredJul 19, 2006

Block range00:19:1A:00:00:00– 00:19:1A: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

00:19:1A:00:00:00 00:19:1A:7F:FF:FF 00:19:1A:FF:FF:FF

Where this block sits

Previous 00:19:19:00:00:00 /24 ASTEL Inc. Next 00:19:1B:00:00:00 /24 Sputnik Engineering AG

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

IRLINK holds 1 registered blocks in the IEEE registry, ranking #16,709 of 33,421 organizations by block count.