MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1B:F1:00:00:00 /24
Vendor address3/F, 10 building, Nanjing World Window Technology & Software Park Nanjing Jiangsu CN 210013
Country🇨🇳 China
RegisteredApr 8, 2007
Block range00:1B:F1:00:00:00– 00:1B:F1: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
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00:1B:F0:00:00:00 /24
Value Platforms Limited
Next
00:1B:F2:00:00:00 /24
KWORLD COMPUTER CO., LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Nanjing SilverNet Software Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #20,612 of 33,427 organizations by block count.