MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix3C:E1:A1:00:00:00 /24
Vendor address141, Lane 351, Taiping Road, Sec.1,Tsao Tuen Nan-Tou Taiwan TW 54261
Country🇹🇼 Taiwan
RegisteredJan 9, 2018
Block range3C:E1:A1:00:00:00– 3C:E1:A1: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 →
Ownership timeline
- Jan 9, 2018 – Sep 17, 2025 Universal Global Scientific Industrial Co., Ltd. name changed
- Sep 17, 2025 – present Universal Global Scientific Industrial., Ltd
Example addresses in this block
Where this block sits
Universal Global Scientific Industrial., Ltd holds 23 registered blocks in the IEEE registry, ranking #154 of 33,421 organizations by block count.
Other blocks registered to Universal Global Scientific Industrial., Ltd
00:10:C6:00:00:00 /24
MA-L
00:16:41:00:00:00 /24
MA-L
00:1A:6B:00:00:00 /24
MA-L
00:1E:37:00:00:00 /24
MA-L
00:21:86:00:00:00 /24
MA-L
00:24:7E:00:00:00 /24
MA-L
00:27:13:00:00:00 /24
MA-L
04:7B:CB:00:00:00 /24
MA-L
08:3A:88:00:00:00 /24
MA-L
0C:3C:CD:00:00:00 /24
MA-L
10:E1:8E:00:00:00 /24
MA-L
38:7C:76:00:00:00 /24
MA-L