MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix64:73:66:00:00:00 /24
Vendor addressRoom 2039, Shenhai Building, Wanzhong Village, Bulong Road, Minzhi, Longhua district, City: Shenzhen Shenzhen Guangdong CN 518131
Country🇨🇳 China
RegisteredNov 28, 2018
Block range64:73:66:00:00:00– 64:73:66: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.
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
Shenzhen Siera Technology Ltd holds 2 registered blocks in the IEEE registry, ranking #3,033 of 33,427 organizations by block count.
Other blocks registered to Shenzhen Siera Technology Ltd