CC
IEEE Registrant 32 Prefixes

Ciena Corporation

Ciena Corporation manages 32 unique MAC address prefixes. These prefixes have a total block size of 536.9 million addresses.

The allocation includes the following types: MA-L(MAC Address Block Large, 16,777,216 addresses each).

The company registered its MAC address allocation on 25 October 2008, and the most recent update was made on 16 October 2026. These allocations support network identification and communication globally.

Unique prefixes 32
Block Size 536870880 (536.87 M)
First registration 25 October 2008
Last updated 16 October 2026

Entity Details

Unique prefixes 32
Block Size 536870880 (536.87 M)
First registration 25 October 2008
Last updated 16 October 2026

Types

MA-L: Block Type

Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

Registered MAC Prefixes

All Organizationally Unique Identifiers and MAC ranges assigned to this vendor

32 Records
MAC PrefixTypeRegistration Date
00:23:8A MA-L2008-10-25
04:79:FD MA-L2023-11-07
14:4E:2A MA-L2018-10-13
14:AB:7E MA-L2026-10-16
18:92:A4 MA-L2019-09-21
1C:11:61 MA-L2017-10-11
20:80:58 MA-L2019-06-19
24:65:E1 MA-L2025-01-09
2C:39:C1 MA-L2014-02-25
2C:4A:11 MA-L2020-10-06
54:C3:3E MA-L2018-06-02
5C:07:A4 MA-L2023-11-07
74:87:BB MA-L2018-03-17
78:5F:A4 MA-L2025-10-08
78:D7:1A MA-L2020-07-09
84:8D:CE MA-L2022-06-16
90:DF:06 MA-L2026-02-11
94:43:4D MA-L2020-02-29
98:11:CC MA-L2025-10-08
9C:7A:03 MA-L2015-11-17
AC:89:D2 MA-L2022-12-13
C4:83:6F MA-L2016-10-15
C8:CA:79 MA-L2021-08-17
D0:19:6A MA-L2019-02-14
D4:39:B8 MA-L2020-10-14
D4:B7:D0 MA-L2021-08-04
D4:E4:C3 MA-L2024-12-16
E0:9B:27 MA-L2022-12-13
E4:6D:7F MA-L2022-06-16
E4:FE:E4 MA-L2026-02-11
EC:B0:E1 MA-L2017-08-11
F4:F0:32 MA-L2026-10-16