MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:18:03:00:00:00 /24
Vendor address20th Floor, Suite (EAST) 2008, China Merchants Plaza, 333 Shanghai CN 200041
Country🇨🇳 China
RegisteredApr 21, 2006
Block range00:18:03:00:00:00– 00:18:03: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
00:18:02:00:00:00 /24
Alpha Networks Inc.
Next
00:18:04:00:00:00 /24
E-TEK DIGITAL TECHNOLOGY LIMITED
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ArcSoft Shanghai Co. LTD holds 1 registered blocks in the IEEE registry, ranking #5,385 of 33,421 organizations by block count.