MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:12:CF:00:00:00 /24
Vendor addressNo. 1 Creation Rd. III, Science-based Industrial Park Hsinchu TW 300
Country🇹🇼 Taiwan
RegisteredNov 16, 2004
Block range00:12:CF:00:00:00– 00:12:CF: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
- Nov 16, 2004 – Oct 30, 2015 Accton Technology Corporation name changedaddress changed
- Oct 30, 2015 – present Accton Technology Corp
Example addresses in this block
Where this block sits
Previous
00:12:CE:00:00:00 /24
Advanced Cybernetics Group
Next
00:12:D0:00:00:00 /24
Gossen-Metrawatt-GmbH
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Accton Technology Corp holds 6 registered blocks in the IEEE registry, ranking #460 of 33,421 organizations by block count.
Other blocks registered to Accton Technology Corp