MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix1C:E1:92:00:00:00 /24
Vendor address157 Shan-Ying Road Gueishan Taoyuan TW 333
Country🇹🇼 Taiwan
RegisteredMay 27, 2011
Block range1C:E1:92:00:00:00– 1C:E1:92: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
Qisda Corporation holds 8 registered blocks in the IEEE registry, ranking #384 of 33,421 organizations by block count.
Other blocks registered to Qisda Corporation