Ciena Corporation

32 blocks

Every MAC/OUI block IEEE has registered to this exact organization name, combined.

Registered nameCiena Corporation

Total assignments32

Total address capacity536,870,912

First tracked hereAug 22, 2026

Last changed hereOct 17, 2026

SourceIEEE Registration Authority

Vendor registration identifies the organization holding a block, not a specific device model, product line, or manufacturing date. This page combines every block IEEE has registered under this exact organization name; it doesn't mean every address in every listed block is currently shipping in a real device.

About Ciena Corporation

Ciena builds optical networking equipment for carriers and data centers.

Devices that use these prefixes

Optical transport and routing equipment

Assignments by type

Type	Count
MA-L	32

Countries in IEEE's registration records

Country	Blocks
🇺🇸 United States	32

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32 registered prefixes

Prefix Type

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 14:AB:7E: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 74:87:BB:00:00:00 /24 MA-L 78:5F:A4:00:00:00 /24 MA-L 78:D7:1A:00:00:00 /24 MA-L 84:8D:CE:00:00:00 /24 MA-L 90:DF:06:00:00:00 /24 MA-L 94:43:4D:00:00:00 /24 MA-L 98:11:CC:00:00:00 /24 MA-L 9C:7A:03:00:00:00 /24 MA-L AC:89:D2:00:00:00 /24 MA-L C4:83:6F:00:00:00 /24 MA-L C8:CA:79:00:00:00 /24 MA-L D0:19:6A:00:00:00 /24 MA-L D4:39:B8:00:00:00 /24 MA-L D4:B7:D0:00:00:00 /24 MA-L D4:E4:C3:00:00:00 /24 MA-L E0:9B:27:00:00:00 /24 MA-L E4:6D:7F:00:00:00 /24 MA-L E4:FE:E4:00:00:00 /24 MA-L EC:B0:E1:00:00:00 /24 MA-L F4:F0:32:00:00:00 /24 MA-L