Ciena Corporation (74:87:BB:00:00:00 /24)

Ciena Corporation MA-L

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

Prefix74:87:BB:00:00:00 /24

Vendor address7035 Ridge Road Hanover MD US 21076

Block range74:87:BB:00:00:00– 74:87:BB: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

74:87:BB:00:00:00 74:87:BB:7F:FF:FF 74:87:BB:FF:FF:FF

Other blocks registered to Ciena Corporation

00:23:8A:00:00:00 /24 MA-L 04:79:FD:00:00:00 /24 MA-L 14:4E:2A:00:00:00 /24 MA-L 18:92:A4:00:00:00 /24 MA-L 1C:11:61:00:00:00 /24 MA-L 20:80:58:00:00:00 /24 MA-L 24:65:E1:00:00:00 /24 MA-L 2C:39:C1:00:00:00 /24 MA-L 2C:4A:11:00:00:00 /24 MA-L 54:C3:3E:00:00:00 /24 MA-L 5C:07:A4:00:00:00 /24 MA-L 78:5F:A4:00:00:00 /24 MA-L