Qisda Corporation (C0:C4:F9:00:00:00 /24)

Qisda Corporation MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

PrefixC0:C4:F9:00:00:00 /24

Vendor addressNo. 157, Shanying Rd., Gueishan Dist., Taoyuan City 33341, Taiwan Taoyuan TW 33341

Block rangeC0:C4:F9:00:00:00– C0:C4:F9: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

C0:C4:F9:00:00:00 C0:C4:F9:7F:FF:FF C0:C4:F9:FF:FF:FF

Other blocks registered to Qisda Corporation

00:03:9D:00:00:00 /24 MA-L 00:17:CA:00:00:00 /24 MA-L 00:1E:21:00:00:00 /24 MA-L 1C:E1:92:00:00:00 /24 MA-L 64:E2:20:00:00:00 /24 MA-L D0:76:0C:00:00:00 /24 MA-L FC:61:79:50:00:00 /28 MA-M