ACA-Digital Corporation

MA-L

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

Prefix00:1A:55:00:00:00 /24

Vendor address17 F, No. 866-7, Chung Cheng Rd., Chung Ho City Taipei County TW 23586

RegisteredNov 29, 2006

Block range00:1A:55:00:00:00– 00:1A:55: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

00:1A:55:00:00:00 00:1A:55:7F:FF:FF 00:1A:55:FF:FF:FF

Where this block sits

Previous 00:1A:54:00:00:00 /24 Hip Shing Electronics Ltd. Next 00:1A:56:00:00:00 /24 ViewTel Co,. Ltd.

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

ACA-Digital Corporation holds 1 registered blocks in the IEEE registry, ranking #3,808 of 33,421 organizations by block count.