MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:05:64:00:00:00 /24
Vendor address12 Floor, Tower C, Corporate CN
Country🇨🇳 China
RegisteredApr 17, 2001
Block range00:05:64:00:00:00– 00:05:64: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
Where this block sits
Previous
00:05:63:00:00:00 /24
J-Works, Inc.
Next
00:05:65:00:00:00 /24
Tailyn Communication Company Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Tsinghua Bitway Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #30,618 of 33,421 organizations by block count.