Riedel Communications GmbH

MA-L

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

Prefix00:19:7C:00:00:00 /24

Vendor addressUellendahler Str. 353 Wuppertal NRW DE 42109

RegisteredAug 27, 2006

Block range00:19:7C:00:00:00– 00:19:7C: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

00:19:7C:00:00:00 00:19:7C:7F:FF:FF 00:19:7C:FF:FF:FF

Where this block sits

Previous 00:19:7B:00:00:00 /24 Picotest Corp. Next 00:19:7D:00:00:00 /24 Hon Hai Precision Ind. Co.,Ltd.

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

Riedel Communications GmbH holds 1 registered blocks in the IEEE registry, ranking #24,591 of 33,421 organizations by block count.