MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix4C:81:20:00:00:00 /24
Vendor address89# Jiang Nan RD Suzhou Jiangsu CN 215412
Country🇨🇳 China
RegisteredDec 15, 2016
Block range4C:81:20:00:00:00– 4C:81:20: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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Taicang T&W Electronics holds 47 registered blocks in the IEEE registry, ranking #76 of 33,427 organizations by block count.
Other blocks registered to Taicang T&W Electronics
04:25:E0:00:00:00 /24
MA-L
04:75:F9:00:00:00 /24
MA-L
14:58:08:00:00:00 /24
MA-L
18:45:93:00:00:00 /24
MA-L
1C:42:B8:00:00:00 /24
MA-L
24:0B:88:00:00:00 /24
MA-L
2C:DD:95:00:00:00 /24
MA-L
38:E3:C5:00:00:00 /24
MA-L
40:33:06:00:00:00 /24
MA-L
4C:06:17:00:00:00 /24
MA-L
50:1B:32:00:00:00 /24
MA-L
50:88:C7:00:00:00 /24
MA-L