MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix6C:40:33:00:00:00 /24
Vendor addressRoom 1316, 1st Floor, Building 12, Jianzhong Road, Xisanqi Building Materials City, Haidian District, Beijing, China Beijing CN 100096
Country🇨🇳 China
RegisteredFeb 12, 2026
Block range6C:40:33:00:00:00– 6C:40:33: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
Beijing Megwang Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #6,640 of 33,427 organizations by block count.