MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1B:46:00:00:00 /24
Vendor addressRoom 309,3 Floor, 404 Building, ShangBu industrial Shenzhen Guangdong CN 518028
Country🇨🇳 China
RegisteredFeb 9, 2007
Block range00:1B:46:00:00:00– 00:1B:46: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
00:1B:45:00:00:00 /24
ABB AS, Division Automation Products
Next
00:1B:47:00:00:00 /24
Futarque A/S
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Blueone Technology Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #7,164 of 33,427 organizations by block count.