MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix54:FB:66:00:00:00 /24
Vendor address2F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District, Taipei TW 112
Country🇹🇼 Taiwan
RegisteredAug 8, 2025
Block range54:FB:66:00:00:00– 54:FB:66: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.
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Example addresses in this block
Where this block sits
ASRock Incorporation holds 7 registered blocks in the IEEE registry, ranking #408 of 33,427 organizations by block count.
Other blocks registered to ASRock Incorporation